Height rubber size chart. How to correctly calculate the inch size of the wheels in millimeters. How to choose the rim size for the tire size

Good day, dear readers. Today I want to answer at once a lot of questions related to the size of the rubber wheel. Many of my readers do not understand what they mean and why they are needed at all! Today I will try to explain in simple and understandable language - what does the size of rubber on cars mean ...

The size of the rubber wheel contains a lot of useful information, you just need to be able to read it. Without this information, you will not be able to choose the right tires for your car, they simply will not fit in size. Although now on the bodies of many brands, special plates with recommendations are applied, just read them and go to the store to buy the same ones. However, there are not always such plates and you need to determine the dimensions of the tires yourself! A small clarification, I will only talk about the overall dimensions, there have already been many articles about the rest of the characteristics, links will definitely be below.

I will tell you about my winter wheels, KAMA EURO 519, about them, it should be noted that they are in no way inferior to foreign analogues. Read informatively.

To begin with, the overall dimensions

I have a wheel size R16 205/55 , these are the so-called overall dimensions. Rubber is considered low profile (more).

The notorious letter R

Many people mistakenly think (to be honest, I thought so too) that the first English letter R stands for the abbreviation "RADIUS"! But this is not the case! The letter R stands for a radial tire, read the article -. This is a method of assembling rubber and metal cord during production. Of course, you can also find the letter D in front (diagonal), but this designation is really rare now. In fact, this letter has nothing to do with size. Let's go further ...

Disc diameter

The second number (in this case we have 16) indicates the diameter of the hole in the rubber, or on which disc you can put this rubber. We have 16 which means it's 16 inches! Remember that this size is always in inches (1 inch \u003d 25.4 mm). if you knock out our size, it turns out - 16 X 25.4 mm \u003d 406.4 mm. The disc cannot be larger or smaller than the diameter of the wheel, you simply will not wear it. That is, if the rubber is 16 (406.4 mm), then the disc should be 16 (406.4 mm).

Width

A large number almost always characterizes the width. In this case, this figure is 205. Measured in millimeters, that is, the width of my wheel is 205 mm. The wider the rubber, the wider it has a track, respectively, the permeability and adhesion increases.

Cord height

This is the smaller number that is applied through a fraction. In my case, this is 55, measured as a percentage of the width (of the larger digit). What does it mean? To find the height (in my case) I need to calculate 55% of 205 mm. Thus it turns out:

205 X 0.55 (55%) \u003d 112.75 mm

This is the height of the cord of our rubber, also an important indicator, see the figure.

Overall wheel height

Let's calculate the total height of my wheel. What happens.

Rubber cord 112.75 X 2 (since the height on both sides, top and bottom) \u003d 225.5 mm

16 '' disc \u003d 406.4

Total - 406.4 + 225.5 \u003d 631.9

Thus, my wheel is slightly more than half a meter high, namely 0.631 meters

Let's look at the most common tires that are used by most cars, there are only three of them - these are R13, R14 and R15

Rubber dimensionsR13

The most common of all isR13 175/70 such are installed on many models of the domestic VAZ (although it is now moving away).

What happens:

R13 - 13 '' diameter (multiply by 25.4) \u003d 330.2 mm

Width 175

Height - 70% of 175 \u003d 122.5

Total - (122.5 X 2) + 330.2 \u003d 574.2 mm

Tire dimensionsR14

One of the most common isR14 175/65, are also installed on domestic VAZ models of more recent years of production, such as Priora, Kalina, Granta, as well as on some inexpensive (popular) foreign cars - for example, Renault Logan, Kia rio, Hyundai Solaris, etc.

What happens:

R14 - 14 '' diameter (multiply by 25.4) \u003d 355.6 mm

Width - 175

Height - 65% of 175 \u003d 113.75

Overall dimensions - (113.75 X 2) + 355.6 mm \u003d 583.1 mm

Tire sizesR15

The most common example is -R15 195/65, installed on many foreign cars of the (popular) class, but in high trim levels.

What happens:

R15 - 15 '' diameter (multiply by 25.4) \u003d 381 mm

Width 195

Height - 65% of 195 \u003d 126.75

General - (126.75 X 2) + 381 \u003d 634.5 mm

As you can see, it is not so difficult to calculate the size of the rubber.

Of course there is still another on the wheel useful information, I already wrote articles about her below. For you I will list the points, read it useful and interesting:

In general, read the heading - there is more information at times. As you can see, all this information can be read from the tire, sometimes it's hard to believe!

In the life of every experienced car owner with 3-5 years of active driving experience, there have been situations when he needed to pick up a wheel disk. However, this procedure is not always possible to do according to the available parameters and geometric characteristics, because the disk itself may not be at hand. In such cases, car owners are often helped by knowing the dimensions of their tires, since by these numbers it is enough to simply choose the product of interest.

Many car enthusiasts who are preparing to buy new wheels to replace worn out, damaged, or simply due to seasonal "overfitting", often ask the same question - how to choose wheels for tires by tire size?

Tire dimension on label

To answer this question, you need to know the general parameters by which these two products are inextricably linked, in particular:

• The radiality should be the same for both the rim and the tire, because this parameter always determines the correspondence of rims and tires, as well as their compatibility. So, the most popular wheel sizes are the range from R13 to R20, where the figure shows the diameter in inches, but many motorists mistakenly consider this value to be the radius.
• The width of the discs corresponds to the same size on the tire, which can only slightly fluctuate. This dimension on the wheel is indicated by the letter J, preceded by its value in inches. So, for example, the range 5.0J-6.0J corresponds to the tire width 175 mm, 5.5J-7.0J - 215 mm, 6.0J-7.5J - 225 mm, and 7.0J-8.5J - 245 mm. Thus, rim width and tire width are absolutely interrelated indicators.
• The next important indicator is the rubber profile, which determines the overall dimension of the wheel assembly. So, for example, for the radiality R17 on "Lada Kalina" you can put tires with a profile height of 40 to 45 mm, because the wheel arches and suspension structures are arranged only for such a maximum size, and, for example, with the same dimension on Toyota Land cruiser 200 will calmly stand a profile with a height of 100 mm.
• Recently, rubber has been produced only tubeless, because the risk of an accident in case of a puncture is minimal, and the edges of the tire, as well as the sides of the rim of the disc, have special rigid ribs, which completely eliminate the passage of air after contact between rubber and steel. However, with chamber rubber, it is necessary to look for discs suitable for it, and this is very problematic.
• Those cars that actively drive off-road often use devices such as beadlocks - powerful bolted steel discs mounted on the inside of the wheel and pressing the rubber. These devices prevent the tire from spontaneously rolling off the wheel rim even when it can no longer maintain pressure due to an accident.

Beadlock disc

The best option when purchasing a disc is to have the rubber itself in stock, or at least know all its characteristics and be ready to always find it in a search engine on the Internet so that the seller can correctly select the disc of interest to his client with optimal parameters.

Rim to tire ratio table

In order for the driver to easily decide on the selection of the size of the disks according to the tire parameters he has, the table below shows the most common geometric characteristics of the wheels:

Rubber height	Tire size	Optimum rim width in inches	Minimum rim width in inches	Maximum disc width in inches
R13
80	155/80 / R13	4,5	4,0	5,5
70	165/70 / R13	5,0	4,5	6,0
65	175/65 / R13	5,0	5,0	6,0
60	185/60 / R13	5,5	5,5	6,5
55	195/55 / \u200b\u200bR13	6,0	5,5	7,0
R14
80	175/80 / R14	5,0	4,5	5,5
70	185/70 / R14	5,5	5,5	6,5
65	185/65 / R14	5,5	5,5	6,5
60	195/60 / R14	6,0	5,5	7,0
55	205/55 / \u200b\u200bR14	6,5	5,5	7,5
R15
80	185/80 / R15	5,5	5,5	6,0
65	195/65 / R15	6,0	6,5	7,0
55	205/55 / \u200b\u200bR15	6,5	6,5	7,5
50	205/50 / R15	6,5	6,5	7,5
45	195/45 / R15	6,5	6,0	7,5
R16
60	225/60 / R16	6,5	6,0	8,0
55	235/55 / \u200b\u200bR16	7,0	6,0	8,0
50	205/50 / R16	6,5	5,5	7,5
45	205/45 / R16	7,0	6,5	7,5
40	225/40 / R16	8,0	7,5	9,0
R17
55	225/55 / \u200b\u200bR17	7,0	6,0	8,0
50	215/50 / R17	7,0	6,0	7,5
45	235/45 / R17	8,0	7,5	9,0
40	255/40 / R17	9,0	8,5	10,0
35	265/35 / R17	9,5	9,0	10,5
R18
50	235/50 / R18	7,5	6,5	8,5
45	255/45 / R18	8,5	8,0	9,5
40	265/40 / R18	9,5	9,0	10,5
35	295/35 / R18	10,5	10,0	11,5
30	325/30 / R18	12,0	11,0	13,0
R20
40	245/40 / R20	9,0	8,0	9,5
35	275/35 / R20	10,0	9,0	11,0

Using the data in this table, any motorist can easily pick up the ones that interest him wheel disks and not to be mistaken, which will ensure a comfortable and safe ride.
Autodisk parameters

How to choose the right disc width

When choosing the width of the rims, the driver should adhere to certain rules, because there are some inconsistencies in the international designation of dimensions.

First of all, you should not be mistaken in the different system of units, because the width of the rim of the disc is determined in inches, while the tire is indicated in millimeters. So, in order to compare the numerical indicators, you need to multiply each inch by 23.5 mm.

Also, the buyer should not be confused by the fact that several sizes of disks can fit on a tire of the same width. This is due to the fact that the rubber product is elastic and can deform at the interface with the disc by several centimeters.

When choosing a disc, it must be remembered that a wheel that is too narrow can cause a tire to break off, since during pressure build-up it will expand more and more, and the sides of a steel product may not hold it at a certain moment.

On the contrary, a disc that is too wide can be damaged, since the side profile of the rubber will not protect it from negative external influences, especially when driving off-road or in deep snow.

The disc for operation only in the summer period can be wider, so that the car looks more spectacular on the track or in a big city, and in winter, on the contrary, narrower, because the powerful side parts of the rubber should protrude as much as possible.

If a car enthusiast chooses stamped discs and prepares to protect them with caps, he should know that plastic or rubber linings are also thick, and so that the wheel does not look like with a negative offset, he should choose its smallest width, based on the table values \u200b\u200bgiven above.

Low profile rubber wheel

Many large points of sale of similar products often have special calculator programs available, combined with an electronic database for accounting for goods in a warehouse. So, the car enthusiast only needs to inform the parameters of his tires, which the seller immediately drives into the program, as initial data, and a list of the most suitable products available in stock is displayed on the screen.

How to choose the rim size for the tire size

Which wheels are suitable for which tires and vice versa? In order for the driver to be confident in the correct choice of the disc he is interested in and not regret the useless purchase later, he must take into account the following features of this product, looking for the right thing for himself:

• The radiality of the tire is determined not by its outer contour, but by the landing dimension at the location of the rigid rims for installation on the disk. So, if there is no way to determine its size on a worn product, it is enough to just measure the inner diameter and divide the resulting number by 23.5 mm to convert the indicator to inches.
• Rubber with the Ran Flat function, which is often bundled with sports cars or with those European brands, whose developers paid special attention not to practicality when replacing a flat wheel, but to free space in the trunk, has very rigid sides and internal transverse ribs. This means that the rim must be selected from high strength metal, preferably in a forged version, because these stiff ribs can easily deform it during prolonged driving on a damaged tire.
• The same can be said if the outer radius of the tire differs little from the inner one due to a too low profile. So, when driving on uneven roads, there will always be an impact on the outer surface of the rim, because the cushioning effect from the air buffer is minimal.
• When choosing a wheel rim for a minibus, full-size SUV or a pickup truck, that is, a vehicle that can be subject to significant loads, unlike a passenger car, it is important to take into account the maximum mass index on the tire. This means that if the wheel can be inflated to 2.7-3 atm., And it will be operated under a constant load of 1 ton or more, then the disk itself must also be reinforced, otherwise the normal use of the wheel assembly simply will not work.

Run-flat tire

If the inner rim of the wheel has a radiality of R17 or more, it is imperative to use only a cast or forged wheel as the main wheel. This is due to the fact that relatively thin stamping sheets are unstable and prone to deterioration during movement, sharp maneuvers or encountering obstacles during long-term operation of the vehicle. In the case of a spare tire, for 1-2 uses for the entire period of operation of the car, it is unlikely that anything will happen to the product.

The main mistakes of car enthusiasts when choosing rims

Not every driver can pick up exactly the product that is optimal for his car the first time. Comparison of disks by parameters is far from the final procedure, after which you can safely purchase a product. So, at retail outlets, returns often happen, as potential buyers make mistakes.

Regardless of the size and type of rubber, the disc can sit perfectly on it, but not fit the hub. This means that information about the attachment point is also necessary, as well as about the dimension of the tires, because there are two most important indicators inherent in a particular car model. These parameters are drilling, that is, the diameter of the bore in the disc, and the bolt pattern is the number of studs and the length of each of them. Without knowing these parameters, the mistake of buying an unnecessary product is very likely, since there are many variations.

People often take a disc of the maximum allowable width and do not follow the ET - offset, and also do not resort to comparing discs. So, this characteristic, for example, ET20, 25, 30, 35, 40, means the distance in millimeters from the point of attachment of the product to the hub to the extreme plane of the disc rim.

In order to choose the right disc offset, tire sizes are not needed at all, since the dimension of the wheel arch and how much the hub is deepened beyond the transverse dimensions of the car are important here.

If these parameters are incorrectly determined, motorists are often faced with the fact that rubber touches the wheel arches when driving, when cornering or while driving on a bad road and, accordingly, interferes with the active operation of the shock absorbers. In addition, the wheel can begin to protrude outside the car, which will inevitably contaminate the body in rainy weather without installing additional wheel arch liners. There is also a risk of damaging the discs when parking the car in parallel near curbs.

High profile rubber with a small radius disc on an SUV

In order to avoid these errors, motorists should study all the technical parameters of not only their rubber, but also the car itself, using the operating manual or consulting with experts in this field.

Before choosing a car, you need to use a special calculator yourself, since many sites have such a help system for motorists. So, for example, following the link, you can enter the brand of car, its model, modification, year of manufacture, VIN number, tire size and other known parameters and the system will absolutely accurately determine all ranges of discs that will most likely fit without any modifications or problems with the hub specific "iron horse".

In addition, immediately on such portals there is information about which brands and at what price these wheels are produced and sold, which will help the buyer to finally decide on the purchase and then not regret it.

When choosing car tires, it is important to remember that matching the dimension of the tire to the dimension of the disks is of great importance. With the diameter, everything is clear - a 15 '' tire must be put on a 15 '' disc. Confusion usually arises with the width of the tire and rim. Their discrepancy can lead to a number of completely undesirable consequences associated with the operation of tires. The contact patch may become irregular, tire wear may increase, and the handling and driving performance of the car may deteriorate. In order not to be mistaken with the choice, use the correspondence table.

You can also do the calculation yourself. To do this, consider an example for a tire with a width of 215 mm and a diameter of 16.

1) We translate the width of the rubber in cm: 215 mm \u003d 21.5 cm

2) We translate the resulting value into inches: 1 cm \u003d 2.54 inches, divide 21.5 by 2.54, we get 8, 46 - round up to 8.5

3) From the obtained value we take 25-30%, in our case: 2.38

4) Subtract the resulting number from the width of the tire and round to tenths 8.5 - 2.38 \u003d 6.1

5) The rim width of the disc must be 6.1 inches or 155 mm.

For discs with a diameter of up to 14 ", inclusive, an error of 0.5 to 1" is possible.

For discs with a diameter of 15 "inclusive, the allowable error is 1.5".

As a calculation, it is better to calculate the allowable range of values, namely, calculate 25% and 30%, where 25% will be the maximum, and 30% will be the minimum width of the rim of the disc.

Correspondence table of tires and wheels for passenger cars

Ø disk	Tire size	Disc rim width (in inches)
		Minimum	Recommended.		Max.
Series 80
Series 70
Series 65
Series 60
Series 55
Series 50
Series 45
Series 40
Episode 35
Series 30

Not all car owners can immediately tell which one. tire size must be installed on their car model. Moreover, not all car owners know how important the correct selection of tires is for the safe and trouble-free operation of your four-wheeled friend. Let's take a closer look at what can be written on the sidewall of a tire and how exactly the size of the tires affects your safety while driving.

You can use a tire calculator to determine the type and size of your car's tires.

The easiest way to determine which tire size must be installed on your car - this is to look at the instruction manual, which was given to you along with the car. You can also try looking at the sticker on the pillar between the driver's side doors. There will be written several numbers and letters of approximately this kind - 185/70 R14. What does this "Chinese letter" mean? The first number in this designation indicates the width of the tire, expressed in millimeters. The second number, located after the fraction, indicates the height of the tire's profile, but not in millimeters, but as a percentage of the width. That is, in our case, this means that the tire height is 70% of 185 mm. The higher this figure is, the higher the tire profile. The letter R means that the tire has a radial ply (there is also a D marking, which means a bias ply, but this type of tire is very rare). And the number after this letter indicates the diameter of the disc for which this tire is intended. So, if someone asked for "wheels of the 14th radius" in front of you, then this person completely misinterpreted the inscription R14. The title block may be followed by additional letters and numbers that define the maximum speed for a given tire, the maximum load per wheel, and the season or type of surface for which the tire is recommended. In addition, it can also be indicated for which type of car (for example, for off-road vehicles) this tire is intended.

Now you know which one tire size recommended your car manufacturer, however, do not always want to follow these recommendations. Often, a car owner wants to distinguish his car from the total mass, and he wants to do this by installing non-standard tires. However, here you can expect a lot of pitfalls and now we will talk about some of them.

Firstly, if you want to put tires of a larger diameter (more precisely, install wheels with a larger diameter and put tires with a higher profile height on them), then you will need to make sure that the new wheels do not rub against the suspension or body elements. Moreover, for the front wheels, it is necessary to check the absence of contact with the body or suspension at all positions of the steering wheel. And for the rear wheels, you need to make sure that they do not touch the arches when the car is fully loaded. If these requirements are not met, then your brand new tires can become unusable in just a few hundred kilometers, and even at the same time seriously let you down somewhere far from home.

Secondly, often the driver wants to install the so-called low-profile tires, i.e. tires with a section height of 55 or even 45 percent of the width. Such tire size gives the car an unusual look, but it is worth remembering that in this case you will seriously reduce ground clearance your car. Of course, if the roads on which you are moving have excellent coverage, and your car does not leave the country road, then the clearance will not interest you and you can put tires of any height. However, most often, when buying such tires, the owner forgets about such nuances, and remembers this on the first pit or bump during the trip to the country. And it is much easier to deform such a tire when it falls into a pit, and not everyone can afford to change the rubber after a couple of unsuccessfully met potholes. Pay attention to someone else's low-profile rubber - you can often see a swelling on the side (lateral hernia) on it.

Further, when driving in summer, you can select tire size with a greater width. In this case, grip on the road surface is improved. But for winter, it is better to take tires of a smaller width, which will increase the pressure in the contact patch and improve grip on snowy or ice-covered roads. When choosing a tire type, consider the maximum speed of your car and the maximum weight of your car with full load. Also pay attention to the climate in your area and how road services work in winter. If you have a lot of snow in winter, then inexpensive all-season tires are unlikely to suit you. In addition, pay attention to the condition of your roads in the summer, if you regularly move on roads with a large number of holes, then you should think about purchasing tires with a higher load index, since such a tire will have a reinforced sidewall, which means it has significantly more chances survive after meeting with the pit.

It is always better to purchase complete wheels at once, but if you suddenly had to deal with the selection of tires by disks, then do not worry, now we will study all the features of this process so that even an inexperienced one could cope.

Basic parameters and their designation

First you need to familiarize yourself with the main parameters and their designation. The wheel diameter is denoted by the “D” symbol and is considered the most significant characteristic. It is very important to adhere to the manufacturer's recommended dimensions. The increased diameter will contribute to the distortion of the speedometer readings. It is also possible for the wheel to overwrite body and chassis elements.

The diameter of the discs is designated "dd", but their width (the distance between the inner edges of the rim) is "Wd", and in the marking it is usually indicated in inches. Height also matters, this characteristic has the code "dt". Low profile tires wear out faster and are not suitable for all roads. If the condition of the road surface is not ideal, then it is better not to buy such tires, since in this case the load on the suspension increases, and there is a possibility of deformation of the disks. They are also noisier.

"Wt" is the width of the tires. For driving on dry roads, wide tires are better suited, as this will shorten the braking distance. For urban conditions and slippery roads, narrow tires are recommended.

Before talking directly about the selection of tires by disks, you should make out a little in the marking of one and the other. Let's start with the disks. The marking can be embossed anywhere other than the inner surface facing the rim. To make it easier to understand, consider the decryption using a specific example.

Let's say you found the following code "6.5JJx13FH6x98ET20d62.1". The first is the width of the disc and it is indicated in inches, in our case it is 5.5. to convert this value to millimeters, multiply it by 25.4. This is followed by a Latin letter (P, D, B, K, J) or their combination (JJ, JK). This symbol characterizes the shape of the profile contour, the height of the shelves, their angle of inclination and the radius of curvature. "JJ" indicates that the car is full drive.

If you see the "x" symbol behind the letter designations, it means that the disc has a solid construction, but collapsible copies in the marking contain the "-" sign. Next, the diameter of the discs is indicated, followed by the index of the humps. It is a value that indicates annular ridges along the flanges. They are entrusted with a very important function - fixing tubeless tires during turns. A simple hump is denoted by one letter "H", flat, as in our case, "FH", and asymmetric - "AH". There are constructions that lack humps.

Further, the value to which you need to pay special attention to when selecting tires for disks is indicated, this is the location of the mounting holes, in our case "6x98". This suggests that there are 6 of them, and the diameter of the circle is 98 mm. The number of holes ranges from 4 to 6, and the circumference ranges from 98 to 137.9 mm. The next is the distance between the plane of attachment of the disc to the hub and its vertical axis. This parameter is called disc offset and is indicated by the letter combination "ET". The number that follows them indicates the value of the offset in millimeters, in our case it is 20 mm.

Departure can be positive, zero or negative. The suspension and steering gear are adjusted depending on this parameter. The last in the marking is the diameter of the bore. For passenger cars, this value ranges from 50 to 70 mm. Quite often, the maximum load, the date of manufacture and the method of production are also stipulated. Discs are available forged, cast and stamped.

Tire marking

If you decide to tackle the selection of tires according to the width of the disks, then you definitely need to be able to decipher the rubber marking. After all, it is this code that contains all the necessary information. You can find it on the side surface of the tire. However, it contains a lot of other information about rubber, starting from the country of manufacture, model and ending with the purpose and type. This information, of course, is of great importance, since it affects the quality of the product, but if we are talking about the selection of rubber for certain discs, then they do not play a decisive role.

But the most important information is contained in the code called the type. To make it as clear as possible, consider the decoding using a specific example. Let's say you find the following code "225/50 R14" on the side of the rubber. The first number indicates the width of the profile in millimeters. Moreover, measurements are made taking into account the sidewalls. Next comes the height, expressed as a percentage of the width. With us it is 50%, which means that to come to the size in millimeters, you need 225x50%, it turns out 112.5 mm.

The next symbol gives information about the construction of the cord. "R" means the tire has a radial cord. And the number following it expresses the mounting size of the rim, it is indicated in inches. As a matter of fact, this is the most important information that is needed when selecting tires by size. The marking also contains a column with the speed and load indices. There are many tables on the Internet in which these numerical-letter designations are translated into specific values \u200b\u200bof loads and speeds.

What will help you choose the right rubber?

The choice of rubber is a very responsible occupation, because if you put on a car inappropriate technical specifications tires, then the problems are inevitable. It can be incorrect indicators of the speedometer, and even rubbing rubber on the wheel arches. How do you know which tires are needed if, for example, you bought a used car and are faced with a replacement for the first time?

There are several ways to do this. The easiest one is to look in the book on the operation of the machine, in it you will surely find the necessary data. Sometimes we do not have such an opportunity, in this case, you can look under the glove compartment lid, where a special table with the necessary information is located. True, there are cars where such a table is not provided. What to do?

Do not be discouraged, you can always go to specialized sites selling tires, and by filling out the plate (year, brand and other information about vehicle), you will receive detailed information on the rubber that is ideal for your vehicle. If you decide to put tires of a different size on your car, then a tire calculator will help you track the change in the linear dimensions of the rubber and the speedometer reading.

How to match tires and rims?

But there are cases, again, they are more often associated with supported cars, when it is necessary to select tires by wheel size, because these two components must match each other as much as possible. Then simple rules will help. For instance, the width of the rubber profile should be 25-30% larger than the size of the disc rim... So, for example, if the width of the disc is 5.5 inches, then add 30% to this value, we get 7.15 inches or 185 mm. It is important that these two parts coincide in their central holes. But if for some reason this does not work, then a special setting ring will come to the rescue. Its outer diameter corresponds to the disc bore, and the inner diameter corresponds to the hub.

But these are not all the features of the selection of tires for. It is also necessary that the tires strictly correspond to the diameter of the circle of the centers of the disc mountings. A maximum take-off run of 2 mm is allowed. In this case, special eccentric bolts are used for fixing. But it's best if these parameters match 100%.

In order not to make a mistake with the choice, you can refer to the special tables for the selection of tires for wheels, where their sizes and compliance are indicated.

There is also such a thing as maximum load. Usually they rarely pay attention to it, since the manufacturers of discs make their products with a good margin of safety. However, if you decide to experiment and, for example, install disks from a sedan on a jeep, then be sure to find out this characteristic. It is quite possible that the disk will not withstand such a load, and the first hole or bump will lead to very sad consequences.