What is the difference between tire sizes?
1 Answers
For the same car model with different configurations produced by manufacturers, the lower-end versions sometimes use one-size-smaller rims, but the tire aspect ratio will also increase. Larger rims can increase ground clearance and improve ride comfort. Here is relevant information: 1. Car spare tires can be divided into full-size spare tires and non-full-size spare tires by type. A full-size spare tire has the same specifications as the four original tires of the car and uses the same rim as the original wheels; A non-full-size spare tire is a spare tire with a narrower tread width or smaller rim size, which usually adopts a steel rim and has speed restrictions (the maximum speed cannot exceed 80km/h). It can only temporarily replace the original tire. 2. The international standard tire code expresses the section width and aspect ratio percentage in millimeters. It is followed by: tire type code, rim diameter (in inches), load index (allowable load mass code), and allowable vehicle speed code. For example: In 175/70R, 14-77H, 175 represents that the tire width is 175mm, 70 means the tire's section aspect ratio is 70%, that is, the section height is 70% of the width, R stands for radial tire, the rim diameter is 14 inches, the load index is 77, and the allowable vehicle speed is grade H.
