Car tires are irreplaceable components of any car. They are able to ensure safety on the road, as well as the implementation of the technical characteristics that were originally declared by the manufacturer. Every year, drivers need to change summer tires to winter tires and vice versa. It is recommended to select tires with the dimensions that were provided by the car company for this or that car model.
Today, the automotive market offers a wide range of tires, which are produced by different manufacturers. They differ from each other not only in materials of manufacture and design, but also in size. Each car model has its own type of tires, which are optimally combined with each other.
Tire dimensions mean, as a rule, three parameters - this is the height (the distance between the inner rim and the ground), the width of the tread and the diameter of the inner hole (in which the rim is placed). It should be noted that the manufacturer, when determining the size of car tires, takes into account their mass, traction, power, width and purpose of use. Allowing even a slight deviation in tire dimensions from the standard can lead to a number of changes, both positive and negative. For example, such as comfort while driving on the highway or dirt road, readings on the speedometer, fuel consumption and much more. It is for these reasons that changing the factory size of tires must be approached with special attention, because the consequences can be unpredictable.
What is a visual tire calculator and what is it for?
Now it is quite easy to correctly determine the size of car tires. You just need to use a visual tire calculator. With its help, the driver will be able to foresee all the nuances in order to avoid troubles in the future. Also, the calculator will allow you to calculate several options in advance in order to make the next purchase correctly. This application shows the results online, so you can get the result in a matter of seconds. Also, the tire calculator will give the most accurate answer, taking into account the speedometer readings, fuel consumption, noise, road conditions, etc. The driver, first of all, needs to be guided by the manufacturer's recommendations and select tires depending on the car model, as well as factory and recommended sizes ...
Determine tire sizes using a tire calculator
- Select the rim or tire sizes that will appear from the dropdown list.
- Take a look at the plate below for possible replacement options.
- From the drop-down list, you need to specify the dimensions of the wheel or tire for the replacement option.
- The online visual tire calculator will perform the calculation and give the user basic recommendations on the parameters that have been specified.
It is worth noting that sometimes the tire calculator does not always offer existing replacement options, so you can always get an online consultation from the manager who will answer all your questions.
Thus, the tire calculator will help to correctly calculate the size of the car tire for its replacement. If the driver decides to change the factory parameters, then this service will provide important recommendations for changing the characteristics of the tires.
The visual tire calculator will help you complete all tasks in seconds. The service is available at any time of the day. The calculator can be used not only through a personal computer, but also through laptops, tablets and smartphones.
During the selection of new wheels for a car, the question often arises, and not whether to put wheels more or less, or in order to improve the appearance of a car or to reduce the cost of buying tires and wheels. But the most important question arises, whether the wheels are suitable for my car and how its characteristics will change. You can understand whether the wheels fit on the gas tank lid or the side stand of the car (photo 1). Or find in our directory the applicability of disks to a car, your car and see the tires recommended by the factory. But it often happens that you can supply other tires that are not officially approved by the factory.
In this case, the main thing is to understand how the speedometer readings will change, i.e. the speed of the car, as the outer radius of the wheel will change. Clearance (ground clearance) will also change. It is not recommended to go beyond the values of the factory tires by more than 2-3%. Vehicle handling and behavior, gas mileage and actual vehicle speed may change.
Tire calculator - size comparison
Our tire calculator will show you the visual difference in diameter, profile, radius, ground clearance and width. Dotted lines indicate size differences. In the upper part, you can see a visual representation of the old tire (original size), and in the lower part, the new tire is visualized. Just as you can see, the tire can be seen in side and front projection. You can copy the URL of the page and show it to other people and they will see the same comparison as you see it.
But how to understand all these values and the difference in%? For this, we have created a tire calculator, it will help you understand the change in all the necessary characteristics and show the difference in% between the old and the new tire and even visually display how the wheel of the old and new size will look like. You just need to enter the tire width, profile and wheel radius. Usually they are displayed in this form - 195 \ 65 R15 (photo 2).
How to use the online tire calculator?
Using our online tire calculator is very easy. In the upper left corner of the site, there are fields for choosing the tire size. In the top row, you need to indicate the dimension of your original factory tire (or tires that are currently installed on your car). These values are written on the tire profile (sidewall). In the first list, you need to select the tire width - it is indicated in millimeters. The second list is the percentage of the section height to the tire width. The third list is the diameter of the disc in inches (commonly referred to as the radius).
In the bottom row, you need to indicate the size of the new tires. Tires that you are going to install on a car or have already bought. Then click "Calculate". Our tire calculator will calculate the differences between the old and new tires and display them in a table and in a picture. Namely: diameter, width, circumference, tire profile height, number of revolutions per kilometer and change in the car's clearance. The first columns of the table will show the parameters for old and new tires, in the next columns the difference in mm and the percentage difference between them.
There is a speedometer at the bottom of the tire calculator for visually comparing the speed of the old and new tires. Under the speedometer, you can increase and decrease the speed and see the change in the speed difference between the old and new tires.
Be careful!
Be careful on the road and follow the manufacturer's recommendations. The reverse side of the installation of non-standard tire sizes, this is the risk of losing insurance in case of an accident, not passing the state technical inspection of the car, since the setting of tires not approved by the factory is considered a change in the design of the vehicle.
You may need such a calculator if you want to install, instead of standard tires or disks, their analogs, but of a different standard size. With its help, you can visually represent dimensional changes and only then interpret them for a specific car. At the same time, the calculator is not a tool for selecting tires and wheels, since it does not contain a database of manufacturers.When replacing disks and tires, taking into account the geometric data obtained from tire calculator, it will not be superfluous to make several measurements yourself. First, the distance from the suspension to the inner surface of the wheel, and also from the shock absorber cup to the tread surface. Secondly, from the wing, as well as the steering rods to the tread surface. At the same time, the geometric parameters of the new wheel assembly should not greatly exceed the size of standard tires and disks. Otherwise, unstable behavior of the vehicle may occur.
A few basic rules to remember when changing tires and wheels.
- Summer tires have a standard tread depth of 0.8-1 cm;
- When installing discs with a larger diameter than the standard ones, it is necessary to reduce the overhang value - for every inch of the height of 3 mm overhang;
- It is not uncommon for the hub bores on discs that are not original to have a larger diameter. Therefore, when installing them, you need to use special rings for fixing;
- In the event that the hole on the disc is smaller than the hub mounts, it is strictly forbidden to drill them out, as well as grind the hub itself;
- Correct selection of non-original disks using a calculator will allow you to preserve the driving characteristics of the car;
- If you are not sure about the compatibility of tires or wheels with your car, it is better not to install, or contact specialists for help.
In the first and second columns, the standard sizes of tires and disks are set. In the remaining columns, the dimensions you want to install. The calculator will help you determine tolerances and alternative selection options.
The tire calculator allows you to compare the dimensions of different tire sizes. For example, choose wider tires, but keep the outer diameter of the wheel the same, or find out how much the vehicle's ground clearance will change if tires of a different profile are installed.
To select an alternative standard size in one half of the calculator, you need to indicate the standard or existing standard size of the tire, in the adjacent half - the desired or alternative.
The calculator displays the recommended rim width for a given tire size, as well as the outer diameter and width of the wheel. The most important parameter is the outer diameter of the wheel. You should pay the greatest attention to its change.
The second important parameter is the actual tire profile height. It is usually expressed as a percentage of the width: for example, 205/55 R16, where 55 is 55% of the tire width. That is, 205 * 55/100 = 112.75 mm is the real height of the profile of this tire.
Diversified tires, which are standardly installed on a car, have different profile heights in percent, but the same in millimeters. For example, tires with dimensions 275/40 R20 and 315/35 R20 have a profile height of 110 and 110.25 mm, respectively.
Some features of the selection of tires:
- The wider the tires, the better the handling, but the less aquaplaning resistance and the more rutting is felt, and the comfort decreases - the low-profile tires are stiffer.
- The lower the profile is the heavier wheel. This is due to the fact that the disc is heavier than rubber, the mass of the wheel increases and this deteriorates the suspension performance. In addition, the mass of metal is distributed closer to the outer edge of the wheel and increases the moment of inertia (this is not essential for cars with a powerful engine).
- With an increase in the profile, the car becomes more roll, less responsive to control, but bumps are easier to overcome, tires are less sensitive to sharp edges of pits, and comfort becomes better.
- A significant change in the outer diameter of the wheel leads to a distortion of the readings of the vehicle's instruments, in particular, the mileage and speed.
Our tire calculator - professional calculations in no time!
What is a tire calculator for:
With this tire calculator, you can easily calculate how the outer dimensions of the wheel, the height of the ground clearance (clearance), the speedometer readings and other characteristics will change when you install tires with a different standard size on your car.
Old tire size
Width
Height
Diameter
New tire size
Width
Select 5.0 5.5 6.0 6.5 7.0 7.5 8.5 9.5 10.5 11.5 12.0 12.5 13.0 13.5 14.5 125 135 145 155 165 175 185 195 205 215 225 235 245 255 265 275 285 295 305 315 325 335 345 355 365
Height
Select 25 27 30 31 32 33 34 35 38 38.5 40 45 50 55 60 65 70 75 80 85 90
Diameter
Select 12 13 14 15 16 16.5 17 17.5 18 19 20 21 22 23 24 25 26 28 30 32
First enter the standard size installed on your car, and then the one that you want to install.
The difference in speedometer readings and real speed depends on the speed of the car, the higher the speed, the greater the difference
| External dimensions | old | New | Difference | ||
|---|---|---|---|---|---|
| Tire width, mm (A) | 0 | 0 | 0 | ||
| Profile height, mm (B) | 0 | 0 | 0 | ||
| Disc diameter, mm (C) | 0 | 0 | 0 | ||
| Outside diameter, mm (D) | 0 | 0 | 0 | ||
| Change in ground clearance, mm | 0 |
On the website of the online store, the site contains a convenient tire calculator that allows you to easily calculate the changes in wheel parameters when switching to a different tire size. With this online tool, you can calculate the outer measurements of the wheel, ground clearance (ride height), calculate the speedometer readings and other characteristics.
With the onset of the new season, every responsible car owner considers it necessary to change the tires in accordance with the season. The best option would be to install tires of the size recommended by the automaker for a particular car brand. In cases where this is not possible, deviations in diameter in the 2% range are allowed.
Replacing rubber requires a serious approach. When choosing new tires and wheels, it is necessary to take into account such indicators as:
- tire width,
- profile height,
- inner diameter of the wheel,
- permissible speed indices.
Incorrectly selected tires can cause malfunctions in the car's electronics, increase fuel consumption, deteriorate driving comfort, and also cause problems during vehicle inspection at the traffic police.
How to calculate tires?
To find the correct tire size, you need to use a tire calculator, with which the theoretical dimensions are determined. All measurements are carried out in millimeters, and the speed in km / h. To make a calculation, you must enter the parameters of the tires of your car in the appropriate line. Then enter the dimensions of the new tire and the rim to be installed. After specifying all the parameters in the table below, information about changes in the width of the tire and the height of the profile, the inner and outer diameter, the difference in speeds (real and according to the speedometer readings) will appear.
What to look for when choosing a tire
- Installing tires and wheels of non-standard sizes can damage the tire itself, damage the wheel and reduce the performance of the car. When choosing a rubber, it is better to rely on the recommendations of the automaker.
- If the diameter of the wheel rim is larger, then the load on the suspension may increase. To maintain the same diameter of the outer wheel, the profile height indicators should be reduced.
- If you choose tires with a greatly increased profile, you need to be prepared for a loss in the quality of vehicle handling. The tire can rub against the body and suspension, causing rapid wear.
- Even with the smallest difference between the indicators on the speedometer and in reality, the error can increase significantly with increasing speed, which makes driving unsafe.
- Narrow or too wide rims can deform the tire. This, in turn, will lead to premature wear and poor performance.
