suggests that it is the front tire specification front tire of the car size specifications; most of the front and rear tire size sedan is the same. But before on a few sports cars, high-performance rear-wheel drive and other special purpose vehicles, the rear tire specifications will be different.
International Standard tires code, in millimeters a sectional height and flatness ratio percentage, followed by: the tire type code, rim diameter (inch), the load index (allowable bearer quality code), Xu vehicle speed code. For example: 175 representative of the tire width 175 / 70R 14 77H is 175mm, 70 represents a flatness ratio of the tire cross section is 70 percentage, i.e. the section height is 70 percentage of the width, rim diameter is 14 inches, load index 77, the allowable vehicle speed is H level.
smaller tire size reduced in the process of vehicles in friction with the ground, so it is more economical in terms of fuel, but the negative impact brought with it, because it will be limited tread diameter greatly reduce its passing ability and comfort. The large size of the tire makes the whole body look arrogant, and guarantees good fit to its acceleration and vehicle stability at high speeds.