Car tires are indispensable components of any car. They are able to ensure road safety, as well as the implementation specifications, which were originally declared by the manufacturer. Every year drivers need to change summer tires for winter and vice versa. It is recommended to select tires with the dimensions that were provided automobile company for a particular vehicle model.
Today on automotive market offers a wide range of tires, which are produced by different manufacturers. Among themselves, they differ not only in materials of manufacture and design, but also in size. Each car model has its own type of tires that 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 ground), tread width, and bore diameter (in which the disc is placed). It should be noted that the manufacturer when determining the dimensions car tires takes into account their mass, traction, power, width and purpose of use. If even a slight deviation in tire sizes from the standard is allowed, this can lead to a number of changes, both positive and negative. For example, such as comfort while driving on a highway or dirt road, speedometer readings, fuel consumption and much more. It is for these reasons that changing factory tire sizes 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 simple to correctly determine the size of car tires. All you need to do is use the visual tire calculator. With it, the driver will be able to foresee all the nuances in order to avoid trouble 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 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 focus on the manufacturer's recommendations and select tires depending on the car model, as well as factory and recommended sizes .

Finding tire sizes with a tire calculator

1. Select the wheel or tire sizes that will appear from the drop-down list.
2. Take a look at the table below for possible options replacements.
3. From the drop-down list, you need to specify the size of the disk or tire for the replacement option.
4. A visual tire calculator online will perform the calculation and give the user basic recommendations for the parameters that were specified.

It is worth noting that sometimes the tire calculator does not always offer replacement options, so you can always get advice from a manager online who will answer all questions.
Thus, the tire calculator will help you correctly calculate the dimensions of a car tire to replace it. If the driver decides to change the factory parameters, then this service will provide important recommendations regarding 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. You can use the calculator not only through a personal computer, but also through laptops, tablets and smartphones.

Tires of American and European production differ in marking. Often a situation arises when it is necessary to convert inches to centimeters. In this article, we will describe how to decipher tire sizes in centimeters.

Metric tire marking

The main dimensions of tires are prescribed by marking, these include:

1. Tire profile width - the distance, expressed in millimeters or inches, between the outer sides of the sidewalls of an inflated tire, excluding elevations, trim or belts. The specified value should not exceed the product rim width by more than 30%.
2. Tire series. Specifies the ratio of the width and height of the product profile. Allows you to distinguish rubber in this way:

• low profile - series less than 70%;
• high profile - in the range of 70-82%;
• full profile - more than 85%.

1. Tire construction. There are radial and diagonal tires. In the first case, the fibers of the cord layer are placed perpendicular to the circumference of the wheel. In the second variant, the cord threads are overlapped. Radial tire design is more common, such tires provide better grip on the road surface, they are more reliable in operation.
2. wheel radius.

How to understand what tire markings mean? The designations on the side of automobile rubber are applied by tire manufacturers. Factory marking is in metric or inch system. For example, the size of tires marked with the metric system 265/75 R15 corresponds to the designation of the inch system 31 × 10.5 R15. The interpretation of these designations in centimeters means:

1. The designation 265/75 R15 indicates the dimensions of the tire:

• 265 - a figure that determines the width of the tire (one centimeter is equal to ten millimeters, 265 mm = 26.5 cm);
• 75 is the percentage (75%) that determines the relationship between the height of the tire profile and the width of the rubber (265 * 0.75 \u003d 198.8 mm or 19.9 cm), the found number indicates the height of the tire profile;
• R - denotes the radial type of tires;
• 15 - wheel diameter, the size is indicated in inches, you can convert the specified parameter into centimeters by multiplying the digital value of interest by 2.54, since 1 inch is 2.54 cm, as a result we get 15 * 2.54 = 38.1.

1. The designation 31 × 10.5 R15 stands for:

• 31 - wheel height (31 inches or 31 * 2.54 = 78.7 cm);
• 10.5 - tire width (10.5 inches or 10.5 * 2.54 \u003d 26.7 cm);
• R - indicates the radial type of tires;
• 15 - determines the diameter of the wheel (15 inches or 15 * 2.54 = 38.1 cm).

• subtract its radius from the total height of the tire (78.7-38.1 \u003d 40.6 cm);
• divide the resulting value by 2 (40.6 / 2 \u003d 20.3 cm).

Differences in the marking of tires

Tire marking with inch system

When deciphering tire sizes, pay attention to the letter in front of the tire dimensions:

1. "P" - indicates the "P-metric" system used for minivans, light pickups (with a carrying capacity of up to 0.5 tons). This system is very convenient, it is often used by tire manufacturers.
2. "T" - "spare" tires are marked with the indicated letter: rubber can be used until the main tire is repaired or replaced.
3. "LT" stands for "Light Truck-metric" system, designed for trucks and vehicles capable of transporting large loads. Vehicles with a load capacity of up to 1 ton fall into this category.
4. "ST" - indicates "Special Trailer Service", products are designed for trailers, they can also be used to transport boats or cars.

Letter values ​​can be at the end of the tire marking, in which case they mean:

1. "LT" - the tire refers to products with early marking:

• "Numeric" - numerical, tires are designed for vehicles transporting heavy loads, trailers
• "Wide Base" - tires with a wide base, manufacturers make such products with a rim diameter of 16.5 inches;
• "Flotation" - flotation, large-sized tires that allow the car to move on a sandy surface or mud.

1. "C" is a commercial tire used for vans and distribution vehicles capable of transporting large loads.

If at the beginning of the marking there is no letter designation and a three-digit number, for example, 45R15, then this is a tire with a metric size of the Euro-metric system applicable on tires of European manufacturers. The indicated dimension corresponds to the decoding according to the P-metric system, but differs in smaller loads.

• 235 - product width (235 mm = 23.5 cm);
• 710 - a figure indicating the outer diameter of the tire (710 mm \u003d 71.0 cm);
• 460 - tire rim diameter (460 mm = 46 cm);
• A - the designation of asymmetric rubber sides, for example, 460A means that the outer side has a diameter of 45 cm, and the inner one is 47 cm.

Such non-standard marking is designed for vehicles with wheels of a specific size, which differ in side profiles from standard metric or inch products. Faced with non-standard markings, it is better to find out their decoding from the tire manufacturer.

Comparison of calculated data

Dimensions requested by the tire calculator to perform calculations

Independent decoding of tire sizes requires a certain accuracy of calculations. You can check whether the conversion of values ​​\u200b\u200bfrom centimeters to inches and vice versa is done correctly using tire calculators. With their help, you can also find out how many tire sizes are suitable for a particular car model.

Tire calculators are easy to find on the Internet, they usually have American and European systems of sizes at the same time. Therefore, by entering the tire sizes recommended by the car manufacturer in the metric system, it is possible to get a list of American and European tires. It is very convenient, if you need to choose trademark tires of interest, as well as view the possibility of changing tire sizes recommended by the manufacturer. When using tire calculators, it is necessary to take into account the error resulting from rounding, so it is better to translate the dimensions of interest manually, then compare them with the options calculated by the Internet resource.

Conclusion

American labeling rubber, if you do not take into account the inches that are unusual for us, it is very convenient to use. But in most situations, you have to deal with the metric notation. Translate inch dimensions in centimeters is not difficult if you understand the decoding of the designations applied by manufacturers to the side surface of tires. In this case, it is necessary to take into account the error of calculations, which may arise due to inattention or rounding of the obtained values. To correctly calculate the dimensions, it is better to use the manual method, then compare the obtained parameters with the data of tire calculators. We do not recommend using only one method, since there is also a certain rounding error in the embedded electronic computing programs.

Visual tire and disk online calculator

tire selection table and rims

Choosing the right tires and rims for your car

As the wise proverb says, “Measure seven times and cut once.” Therefore, when deciding to replace the tires and wheels on your car, first select the dimension that is suitable specifically for your car. And the tire selection calculator is best suited for these purposes - an online service for car owners, created just to simplify and speed up the selection of tires and wheels.

Since everyone who decides to abandon standard-size wheels faces a similar task, and not everyone knows how to choose the right tire size, tire disk calculator took a well-deserved place in the list of useful services for car owners on our website. Use the tire and rim size calculator to help you make the right choice.

Online tire and wheel calculator

The proposed tire and wheel calculator is different obvious benefits, which were appreciated in practice by its users, many among them believe that this is the best tire calculator in Runet.

Clearness of calculations

The visual calculator of tires and wheels contains a schematic image of a car wheel, which immediately displays the values ​​specified in the calculator, which allows you to visually see the changes in the dimensions of the wheel when changing its parameters.

Auto tire calculator will quickly select possible sizes

The online tire calculator allows you to select tires by size for any passenger car in a few clicks. A quick and easy calculator for selecting tuning discs for custom size tires. In a matter of minutes, you can determine the maximum or optimal dimensions of the disk radius, its offset, as well as the width and height of the tire profile.

You can choose tires for almost any car

First of all, the service is conceived as a tire and wheel selection calculator for passenger cars, however, the ability to perform calculations for wheels with a rim diameter of up to 20 inches allows, in suitable cases, to use this online program for those who need a calculator truck tires(tire calculator for truck tires).

Selection of wheels by tire size and selection of tires by wheel parameters

The online tire and rim selection program allows you to select rims for tires and decide on suitable size tires for your car.

Calculator wheel tires works online

The online tire calculator does not need to be downloaded and installed, the service is always available online. Convenience online service is that it allows you to use the possibility of selecting tires and rims in real time and without registration. Access to the tire calculator is possible from any device with Internet access.

How to use the tire disk calculator

Visual tire calculator offers tire comparison different size. Using the calculator is very easy. As you can see, the bus disk calculator is divided into two parts. The upper area of ​​the calculator includes fields for selecting tire and wheel parameters, as well as a graphical representation of the wheel, where changes are displayed on the fly, once all dimensions are determined. And the lower area, which offers a complete table of sizes for wheels of different diameters with tires of various widths and profiles that could fit the dimensions you specified recommended by your car manufacturer. Size Chart Shown possible tires and disks allows you to quickly get information about the dimensions suitable for the car.

The main problem that the tire-disk calculator solves is that it allows you to choose a “cheap” tire size. For those who are not in the know, there are expensive tire sizes and cheap ones, but cheap not because the tires are bad or the release date is ten years old, but because the sizes are not popular with manufacturers, although changes from the size recommended by the manufacturer will be very small. Using the calculator, you can quickly determine the most inexpensive tire size for your car, after which it will be easier to decide on the manufacturer.

If with summer tires inexpensive options can come across in any dimension, since a pattern has not been identified, then in relation to winter tires more or less obvious. If you add 5% of the profile height from original size. Then for the same manufacturer of car tires, the difference in the sale price can be up to 30%. The calculation formula is simple, the higher the profile of the wheel (within reasonable limits), the cheaper it can cost.

Virtual tire calculator for rims and tires will help you make the right choice!

Service users do not need to make complex independent calculations of the difference in allowable tire sizes and wheel offsets, the disk-tire calculator provides a detailed comparison table between the recommended size and the desired size, based on which you can easily make your choice.

Beyond the visual tire calculator Our website contains other useful online services for car owners.

To simplify determining the size of tires, a special tire calculator has been developed that allows the user to bypass the need to decipher the numerical values ​​​​on the side surfaces of the rubber. With the help of such a calculator, the difference in tire sizes, profile height and other parameters are determined. In addition, such a calculator allows you to receive other related information, for example, on speedometer deviations, changes in ride height, and so on.

Purpose of the visual tire calculator

A visual calculator allows each car owner to easily determine the size of tires and the width of the required disks. With its help, it is possible to determine the diameter of the wheels, the error of speedometers, the increase in the road track and changes in the clearance under the bottom of the car. Using the tire calculator, it is extremely easy to determine optimal size suitable for a specific car model. The built-in size conversion system allows you to instantly transform values ​​​​from inch to meter and vice versa.

It is advisable to use the potential of the calculator in cases where the car owner switches to using tires and wheels that are different from the original size. It allows you to visually determine the main dimensions, and then model them for the selected car. In turn, the selection of tires with its help is impossible, since initially it does not provide for division by manufacturer.

Selection and comparison of tires according to the calculator 2.0

In the case of installing new disks and tires of a different size based on the data received from the calculator, it is advisable to additionally carry out a number of measurements. Determine the appropriate distance inside between the wheel and suspension, and from the tread to the shock cup. In addition, you will need to measure the distance between the tread, fender and tie rods.

In turn, when choosing new tires, it is necessary to proceed from the expediency of a slight deviation in the geometric dimensions of new tires from those previously used. A significant size will cause instability in the movement of the car.

Each car is initially created for certain parameters and dimensions. This fully applies to the allowable size of the discs and rubber used. Accordingly, the selected rubber models must be within the established boundaries. The use of a tire calculator allows you to simplify the selection process as much as possible, depending on a particular vehicle.

The Russians have to regularly deal with the replacement of rubber, primarily seasonal. by the most simple solution in such a situation is the use of rubber similar in size. While maintaining the dimensions of the rubber, the wheel will also retain its original dimensions.

In cases where tires of a different size are selected, the selection of appropriate disks is required to obtain a wheel with the required dimensions. However, due to the change standard sizes tires have the ability to control the driving characteristics of the car, giving additional softness or rigidity. The higher the profile used, the softer the car feels on the road. Rigidity increases with a decrease in the profile, and narrow tires give more grip on snowy surfaces, so they look more advantageous on winter roads.

At the same time, when choosing the dimensions of tires and wheels, it is required to adhere to allowable sizes. For example, tires that are too wide will touch wheel arches, rubbing them, and wearing out intensively on their own. It is also worth considering the fact that changing the size of the wheels affects the operation of the speedometer, in particular, the magnitude of the error.

From the outside, it may seem that the variety of available configurations greatly complicates the calculations, but the tire calculator greatly simplifies the selection process using 3D modeling. Correct selection tires, this is not only a necessary safety, but also an optimization road opportunities car. At the same time, the presence of a metric and inch size system allows you to work without problems with both American and European standard sizes.

When choosing new wheels for a car, the question often arises, should I put wheels larger or smaller, or in order to improve appearance auto or cheaper purchase of tires and wheels. But the most important question arises, will the wheels fit my car and how will its characteristics change. You can understand whether the wheels will fit on the gas tank cap or the side stand of the car (photo 1). Or find your car in our directory of applicability of discs to cars, and see the tires recommended by the factory. But it often happens that you can put other tires that are not officially approved by the factory.

In this case, the main thing is to understand how the speedometer will change, i.e. the speed of the machine, as the outer radius of the wheel will change. The clearance will also change ( ground clearance). It is not recommended to go beyond the values ​​of factory tires by more than 2-3%. The handling and behavior of the car, the consumption of gasoline and the actual speed of the car may change.

Tire calculator - size comparison

Our tire calculator will show you visual differences in tire diameter, profile, radius, ground clearance and width. Dashed lines show the difference in size. At the top, you can see a visual representation of the old tire (original size), and at the bottom, a visualization of the new tire. Just as you noticed, the tire can be seen in lateral and frontal 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.

But how to understand all these values ​​\u200b\u200band the difference in%? To do this, we 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 new tires, and even visually display how the wheel of the old and new sizes 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 a tire size. In the top row, you need to indicate the size of your original factory tire (or the tires that are currently installed on your car). These values ​​are written on the tire profile (side surface). In the first list, you need to select the tire width - it is indicated in millimeters. The second list is the percentage of profile height to tire width. The third list is the disc diameter in inches (commonly referred to as the radius).

In the bottom row you need to specify 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 a picture. Namely: diameter, width, circumference, tire profile height, number of revolutions per kilometer and change in car clearance. The first columns of the table will show the parameters for old and new tires, the following columns will show the difference in mm and percentage difference between them.

There is a speedometer at the bottom of the tire calculator to visually compare the speed of the old and new tires. Under the speedometer, you can speed up and slow down and see changes in speed difference between old and new tire.

Be careful!

Be careful on the road and follow the manufacturer's recommendations. The reverse side of the installation is not standard sizes tires, 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 that are not approved by the factory is considered a change in the design of the vehicle.