What is the tire calculator:
With this tire calculator, you can easily calculate how to change: external wheel sizes, road lumen height (clearance), speedometer reading and other characteristics, when installing tires with another size of your car.
Old tire size
Width
Height
Diameter
New tire size
Width
Choose 5.0 5.5 5.0 6.0 6.5 7.0 7.5 8.5 9.5 10.5 11.5 12.0 12.5 13.0 13.5 14.5 125 135 145 155 165 175 295 195 205 215 275 235 295 355 335 335 335 355 365
Height
Select 25 27 30 31 32 33 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
Enter the first size installed on your car, and then the one you want to install.
The difference in speedometer testimony and real speed depends on the velocity of the car, the more speed, the greater the difference
| External dimensions | Old | New | Difference | ||
|---|---|---|---|---|---|
| Tire width, mm (a) | 0 | 0 | 0 | ||
| Profile height, mm (b) | 0 | 0 | 0 | ||
| Diameter of disk, mm (C) | 0 | 0 | 0 | ||
| Outer diameter, mm (D) | 0 | 0 | 0 | ||
| Changing the road lumen, mm | 0 |
On the website of the online store, the site has a convenient tire calculator, which allows you to easily calculate the changes in the wheel parameters when switching to another tire sizew. With this online tool, you can calculate the external measurements of the wheel, clearance (road lumen height), calculate the speedometer readings and other characteristics.
With the onset of the new season, each responsible car owner considers it necessary to change the rubber in accordance with the time of the year. The optimal option will be the installation of tires of the size, which recommended an automaker for a specific car brand. In cases where this is not possible, deviations are allowed in a diameter in a 2% range.
Replacing rubber requires a serious approach. Selecting new tires and discs, it is necessary to take into account such indicators as:
- tire width,
- profile height
- inner wheel diameter,
- permissible speed indices.
The incorrectly selected tires can cause malfunction of the car, increasing the fuel consumption, deterioration of comfort when driving, as well as cause problems during the vehicle inspection in the traffic police.
How to make tire calculation?
To pick up the tires of the required size, you need to use the tire calculator, with which theoretical dimensions are determined. All measurements are carried out in millimeters, and the speed in km / h. To make a calculation, you should enter your auto tire parameters in the appropriate line. Then enter the size of the new bus and disk, which will be installed. After specifying all the parameters, the table below appears information about changes in the width of the tire and the height of the profile, internal and external diameter, the difference in speeds (real and speedometer indications).
What to pay attention to the selection of tires
- Installation of tires and discs of non-standard size can lead to damage to the tire itself, damage to the disk and reduce the operating characteristics of the car. When choosing rubber, it is better to rely on the recommendation of the automaker.
- If the wheel disk diameter is larger, then in this case, the load on the suspension may increase. To preserve the former diameter of the outer wheel, the profile height indicators should be reduced.
- If you select tires with a highly enlarged profile, you need to be prepared for the loss of quality control by car. The tire can touch the body and suspension, which will lead to rapid wear.
- Even with the most insignificant difference in the speedometer and in reality, the error can grow at times with raising the speed, which makes the ride unsafe.
- Narrow or too wide discs can cause tire deformation. This, in turn, will lead to premature wear and worsening performance.
Do you want to choose a bus for your car, but do not understand the tire marking? It's not a problem! In this section, we will help you figure out: what are the tire parameters that they mean, and which tire is suitable for your car.
Pick up tires / bus catalogDecoding tire marking.
195/65 R15 91 T XL
195 - This is the width of the tire in mm.
65 - proportionality, i.e. Profile height ratio to width. In our case, it is equal to 65%. Simply put, with the same width, the more this indicator, the tire will be higher and vice versa. Usually this magnitude is called simply - "profile".
As the tire profile is a relative value, then it is important to take into account when selecting rubber, that if you instead of the size of 195/65 R15, you want to put tires with a size of 205/65 R15, then not only the width of the tire will increase, but also the height! That in most cases is unacceptable! (except in cases where both of these sizes are listed in the auto operating book). The exact data on the change in the external sizes of the wheel you can calculate in a special bus calculator.
If this ratio is not indicated (for example, 185 / R14C), it means it is equal to 80-82% and the tire is called full-face. Reinforced tires with such labeling are usually used on minibuses and light trucks, where a large maximum load on the wheel is very important.
R. - means tire with radial cord (in fact, now almost all tires are made this way).
Many mistakenly believe that R- means the tire radius, but it is the radial design of the tire. There is still a diagonal design (denoted by the letter D), but recently it is practically not released, since its operational characteristics are noticeably worse.
15 - wheel diameter (disk) in inches. (It is diameter, not a radius! This is also a common mistake). This "planting" tire diameter on the disk, i.e. This is an internal size of the tire or an outdoor disk.
91 - Load index. This is the level of maximum permissible load on one wheel. For passenger cars, it is usually done with a margin and when choosing tires is not a decisive value, (in our case, in - 91 - 670 kg.). For minibuses and small trucks, this parameter is very important and must be observed.
Tire Load Index Table:
T. - Tire speed index. What he is more, with the greater speed you can ride on this tire, (in our case, IS - N - up to 210 km / h). Speaking about the tire speed index, I would like to note that this parameter manufacturer of tires guarantees the normal operation of rubber at a constant movement of the machine at the specified speed for several hours.
Speed \u200b\u200bIndex Table:
American tire marking:
There are two different marks of American tires. The first one is very similar to the European, only before the size of the letters "P" (Passanger - for the passenger car) or "LT" (Light Truck - Light Truck) is set. For example: P 195/60 R 14 or LT 235/75 R15. And other tire marking, which is fundamentally different from European.
For example: 31x10.5 R15 (corresponds to the European Size 2) 265/75 R15)
31
- External tire diameter in inches.
10.5
- Tire width in inches.
R. - The tire of the radial design (the older models of the tires were with a diagonal design).
15
- the inner diameter of the tire in inches.
Generally speaking, if you do not consider inch unusual to us, then the American marking tires are logical and more understandable, at different from the European, where the height of the tire profile is impermanent and depends on the width of the tire. And then everything is simple with decoding: the first digit size is the outer diameter, the second is the width, the third is the inner diameter.
Additional information indicated in the marking on the sidewall bus:
XL or Extra Load - reinforced tire, the load index of which is 3 units higher than that of the usual tires of the same size. In other words, if the load index 91 is specified on this tire with an XL or Extra Load mark, then this means that with this index, the bus is capable of withstanding the maximum load of 670 kg instead of 615 kg (watching the tire load index table).
M + S. Or M & S Tire Marking (Mud + Snow) - Mud Plus Snow And Means Tires All-season or Winter. On many summer tires for SUVs, M & S is indicated. However, these tires cannot be operated in winter, because Winter tires have a completely different composition of rubber and tread pattern, and the M & S icon indicates good tire patency.
All season or as All-season tires. AW (Any Weather) - any weather.
Pictogram * (Snowflake) - Rubber is intended for use in harsh winter conditions. If there is no tire on the sidewall this label, then this tire is designed for use only in summer conditions.
Aquatred, AquaContact, Rain, Water, Aqua or Pictogram (umbrella) - Special rain tires.
Outside and Inside; Assymmetric tires, i.e. It is important not to confuse which side is outdoor, but which is internal. When installing, OUTSIDE must be from the outside of the car, and Inside - with the inner.
RSC. (Runflat System Component) - Runflat tires are tires on which you can continue moving by car at a speed of no more than 80 km / h with full pressure drop in the tire (when crossing or cut). On these tires, depending on the manufacturer's recommendations, you can drive from 50 to 150 km. Different manufacturers of tires use various RSC technology designations. For example: Bridgestone RFT, Continental SSR, Goodyear Runonflat, Nokian Run Flat, Michelin ZP, etc.
Rotation Or the arrow this marking on the sidewall of the tire means the directional tire. When the tire is installed, it is necessary to strictly observe the direction of rotation of the wheel specified by the arrow.
Tubeless - Delicious Tire. In the absence of this inscription, the tire can only be used with the camera. Tube Type - indicates that this tire must only be operated with the camera.
Max Pressure.; The maximum allowable tire pressure. Max Load is the maximum permissible load on each car wheel, kg.
Reinforced. or RF letters in a sizer (for example 195/70 R15RF) mean that this is a reinforced bus (6 layers). The letter C at the end of the size (for example, 195/70 R15C) denotes a cargo tire (8 layers).
Radial This marking on rubber in a sizer means that it is the autoresin of radial design. Steel means that metallic cord is present in the tire design.
Letter E. (In the circle) - the tire corresponds to the European ECE (ECONOMIC COMMISSION FOR EUROPE). DOT (Department of Transportation - US Department of Transportation) - American Quality Standard.
Temperature A, B or C The heat resistance of the autoresine at high speeds on the test stand (and is the best indicator).
TRACTION A, B or C - The ability of the tire to braking on a wet roadway.
Treadwear.; The relative expected mileage mileage compared to the special standard US test.
TWI (Tread Wear Indiration) - Pointers of tire tread wear indicators. Marking on the TWI wheel can also be with an arrow. Indicators are located evenly in eight or six places across the entire circumference of the tire and show the minimum permissible tread depth. The wear indicator is performed as a protrusion with a height of 1.6 mm (the minimum protector for light vehicles) and is located in the deepening of the tread (as a rule, in drainage grooves).
Dot. - Clear address of the manufacturer, bus size code, certificate, release date (week / year).
With the help of a bus calculator, you can easily calculate how to change: the external dimensions of the wheel, the height of the road lumen (clearance), the speedometer reading and other characteristics, when installing tires with another sizes on your car. All sizes of tire calculator calculates in millimeters, and car speed in km / h.
And also the calculator will help calculate the required disk width for a specific type of tire.
How to use tire calculator:
Enter the first sizes installed on your car, and then the one you want to install and click "Calculate". The table will show the results of calculator calculation.
Detailed tire marking information in the section: Tire marking.
We recommend that you establish only the factory sizes of the tires that are listed in the instruction manual for your machine. Installation of non-standard sizes can lead to the removal of warranty obligations at the dealer, as well as the deterioration of the characteristics and control of the car.
Tire Calculator for European Tires
Old Size:
New Size:
145 155 165 175 185 195 205 215 225 235 245 255 265 275 285 295 305 315 325
/ 25 30 35 40 45 50 55 60 65 70 75 80 85
12 13 14 15 16 17 18 19 20 21 22 23 24
Found a catalog:
175/70 R13 -
175/70 R13 -
When recalculating tire sizes on the calculator, it should be borne in mind that:
With an increase in the diameter of the wheel disk, (and, as a result, reducing the height of the tire profile so that the outer diameter of the wheel remains unchanged) increases the load on the car suspension, as well as the comfort will deteriorate (the car becomes noticeably tough).
With an excessive increase in the tire profile, the machine becomes "roll", it is worse than the tire profile height of the tire can begin to cling to the parts of the body and the car suspension, which will later lead to its destruction.
Car tires are an indispensable 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 on the winter and vice versa. It is recommended to select tires with the sizes that were provided by the automotive company for a particular autocar model.
Today, the automotive market offers a wide range of tires, which are produced by different manufacturers. Among themselves, they differ not only by manufacturing materials and design, but also sizes. Each car model has its own type of tires that are optimally combined with each other.
The sizes of the tire are intended, as a rule, three parameters are height (the distance between the inner wheel disk and the ground), the tread width and the diameter of the inner opening (which is placed the disk). It is worth noting that the manufacturer in determining the size of automotive tires takes into account their mass, craving, power, width and purpose of use. If you even make a minor deviation of the sizes of the tires from the standard, it can lead to a variety of changes, both positive and negative. For example, such as comfort during a trip along the highway or dirt road, readings on the speedometer, fuel consumption and much more. It is for these reasons to change the factory sizes of the tires, it is necessary to approach with special attention, because the consequences can be unpredictable.
What is a visual tire calculator, and why is it needed?
Now it is easy to determine the size of the automotive tires sufficiently. Just need to use a visual tire calculator. With it, the driver will be able to provide all the nuances to avoid trouble in the future. Also, the calculator will allow you to figure out a few options to make the subsequent purchase correctly. This application shows the results in online mode, so you can get the result in seconds. Also, the tire calculator will give the maximum accurate answer, taking into account the readings of the speedometer, fuel consumption, noise, conditions on the roads, etc. The driver, first of all, needs to be focused on the manufacturer's recommendation, and select tires depending on the car model, as well as factory and recommended sizes .
Determine the size of the tires through the bus calculator
- Select the size of the disk or tires that will appear from the drop-down list.
- Look at the tablet below, where possible replacement options are indicated.
- From the drop-down list, you need to specify the size of the disk or tires for the replacement option.
- A visual tire calculator in the online mode will calculate, and will give the user the basic recommendations on the parameters that were specified.
It is worth noting that sometimes the bus calculator offers not always existing replacement options, so you can always get advice from the online manager, which will answer all the questions.
Thus, the tire calculator will help correctly calculate the automotive tire sizes to replace it. If the driver decided to change the factory settings, this service will provide important recommendations regarding the change of tire characteristics.
A visual tire calculator will help perform 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.
With the wear of the factory tires or the desire to install new rubber, the following question arises: which the type of tires will fit perfectly? Each brand and the auto model is designed for an individual protector and wheel parameters. All the necessary information is contained in the technical documentation or on the vehicle body - on the lid of the gasoline tank from the inside.
The online store of Tire and Discs Moshoshin has developed a special tire calculator online, with which it seems possible to determine the differences between the tires in percent, inches and centimeters.
Visual tire calculator
It is imperative to choose the proper size rubber. If you make mistakes and deviate from factory sizes, even a few percent, the sensors will start distorting topical information, the fuel consumption will increase, and the driving itself will become unsafe.
Tire Calculator: Tire Comparison
With our electronic form, you quickly and easily compare the circle and diameter of the wheel, profile, protector. In addition, the tire calculator displays the differences in the melting of the suspension, the speed of the machine and the number of rotation of the engine.
Tire Calculator Visual Online: Terms of Use
On the left in the upper corner there are two forms for filling:
- Former size (sizes of the original tire);
- New size.
In the fields from left to right, you need to specify the width of the tire (millimeters), the ratio of height to width (percent) and the disk diameter (inches). These indicators are indicated on the tire profile. For convenience and comprehension, the image of the bus and disk, which can be turned on and off are displayed.
When filling out all fields, the bus calculator will calculate the difference and provide all the information in the table on the right. If the difference is 3% or more, then we do not recommend such tires.
