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speedometer calibration for larger tires
When changing the wheel size, the flat ratio of the tire must be reduced accordingly, so that the size of the tire can be close to the original size, and the speedometer will not be affected. For example, the tire of 195/55/15 uses a 15-inch wheel, and the size of the wheel is replaced with a 16-inch wheel. The tire size close to it is 195/50/16. It can be seen that increasing the wheel size with the same tire width must reduce the aspect ratio accordingly.
1. Increase the wheel hub, the tire diameter and circumference have not changed, and the speed per hour has not changed.
2.Increase the wheel hub, and at the same time change the diameter and circumference of the tire, when it is larger than the original tire size, the actual speed of the vehicle will be greater than the speed displayed by the instrument at the same speed. When it is smaller than the original tire size, the actual speed of the vehicle is less than the speed displayed by the instrument. Note: (When the vehicle is equipped with ABS, changing the tire size will affect the response speed and effect of the ABS, causing potential safety hazards).
Rim specification: it refers to the rim specification matched with the tire. It is convenient for practical use, such as "standard rim 5.00F".
Balance mark: it is made of colored rubber and printed on the tire side, indicating that the tire is the lightest here. It should face the valve during assembly to ensure the balance of the entire tire.
Rolling direction: the tread pattern on the tire is particularly critical to the drainage and anti-skid during driving. Therefore, the arrows commonly used for off-road vehicle tires with asymmetric tread patterns are equipped with rolling direction to ensure the designed adhesion, anti-skid and other performance. If the installation is wrong, it will backfire.
Wear limit sign: one side of the tire uses rubber strips and blocks to mark the wear limit of the tire. Once the tire reaches this mark, it should be replaced in time, otherwise the tire will burst halfway due to insufficient strength.
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