Quite often, you need to select the size of car tires to fit a specific type of vehicle. However, in addition to the size of the tires, there are other important parameters that should not be ignored, because the durability of the wheels and the quality of traction depend on them.
It is necessary
- - table of the main parameters of tires;
- - roulette;
- - a sheet of paper and a pen.
Instructions
Step 1
Look at the nameplate in the driver's side doorway for the recommended tire size. Write it down on paper or memorize it. Find wheels of this size in a car dealer and use a tape measure to measure the outer diameter of the tire. Write this value down on paper. Drive the car into the hole and turn the front wheels out completely: first in one direction and then in the other direction. Measure with a ruler or tape measure the distance from the tire to the nearest structural member and write these values down on paper.
Step 2
When choosing your favorite tires, take into account the diameter of the future rims, and, depending on the size of the future tire, choose the width of the rims. The required disc width is equal to the tread width. It may be easier to find a disc with a slightly larger diameter and the desired width. For example, take rims of 14 inches instead of 13 and pick up tires on them. This option will be even more advantageous in terms of durability, but at the same time more expensive.
Step 3
Try to buy tires that are approximately the same dimensions as the recommended ones. For example, the manufacturer recommends tires with dimensions 175 / 70R13 86S. 175 is the overall width of the tire in millimeters, / 70 is the height of the tire profile as a percentage of the width, R-13 is the mounting diameter corresponding to the diameter of the discs, 86 is the load factor, S is the speed index. It is worth noting that the overall width of the tire may differ from the tread width, so if you want a wider tread, then pay attention to this feature. Do not use tires with reduced load and speed ratios.
Step 4
If you want to put R16 wheels instead of R13 on your car, find a rubber of a suitable width. Since there are no R16 tires with 175mm width, it is more realistic to find tires with a width of 215mm and wider. Look at your notes and calculate how many centimeters you have left. Increasing the width of the tire by 1cm more than the recommended one reduces the measured distance between the wheel and the body by 5mm. Please note that it is not advisable to increase the wheel diameter by more than 3 cm, as this will lead to increased fuel consumption and a deterioration in the traction characteristics of the machine. Select suitable tires and measure their diameter with a tape measure. Compare with the recommended wheel diameter. If the excess of the recommended dimensions of the future wheel is within your calculated norm, you can safely buy the selected tires. The speed and load factor in this case will significantly exceed the recommended one, which will have a beneficial effect on the durability of the rubber.
