How to determine the diameter of the wheel

The diameter of the wheels of your car will be useful to you when you are going to change the rubber. You can find it in several ways, for example, checking the technical documentation of the car. In the "Wheels" section, a digit can be specified - in inches or centimeters, depending on the producer country, indicating the diameter of the standard wheels. From regular sizes, it is better not to move far, since it may change the technical characteristics of the car, to reduce its safety and ease of controllability on the road.

There are several methods for determining the diameter of the car's wheels. For all of them you will need to make simple mathematical actions. Also at hand it is necessary to have any measuring device - for example, a roulette, a marker or a piece of chalk and a calculator.

Remove the wheel from the car or simply take the old car bus, apply a marker or a chalk mark on the wheel and read the line on the surface of the Earth. Align both lines and ride the wheel forward - when the mark on the wheel touches the Earth again, spend another feature. Measure the distance between the two lines using a roulette. Divide the resulting number by 3.14 (number PI). You will receive wheel diameter in centimeters. In order to bring this number to a more common incone, divide it by 2.54.

The second method of calculating the wheel diameter is calculated by the formula: the amount of the diameter of the disk and the double height of the bus profile. Roulette Measure the disk diameter and tire profile height. Move all values \u200b\u200bin inches and fold each other. So you get the wheel diameter.

According to a simpler formula, the number that is equal to the width of the wheelbarrow, it is necessary to increase by 20% - it will be the width of the wheel. However, this is not a completely accurate calculation method, since the width of the tire is the value is non-permanent and can be both wide and narrow. In case you have a narrow rubber profile, increase the number 20, and by 15%.

You can go along the path of least resistance and not to calculate the diameter of the wheels on their own, but only to visit the car service. Here, everything will be measured by specialists using special equipment. In this case, you will be confident in the accuracy of the calculations produced, in addition, they will immediately be in inches and additional calculations will not be required.

Exceed the diameter of the wheels installed by the manufacturer is not recommended. In this case, the grip of the wheels is worsened with the road, the wheels when turning are started to touch the vehicles of the car, interfere with the movement, and just faster it faster. However, you can increase the diameter of the disks by reducing the rubber profile. Just keep in mind that, firstly, the sensations will change while driving - on low-profile rubber, all bumps and pits will be felt stronger, and, secondly, if you align the tire profile too much, it may not withstand the load.

When buying new automotive tires, pay special attention to determine the diameter of the wheels of its iron horse. Since your choice will depend on the correctness of the calculations, and with it - both safety on the road.