Are the front and rear tires just the same size?
Under normal circumstances, ordinary cars should not use flat than >75% tires, luxury cars and high performance sports car than the <60% recommended flat tire; R is the abbreviation of Radial English, said tire radiation layer structure is 15 inches diameter rim. If some tire marks as 6.00-12, which indicates that it is not radial tire, but tire, the tire in the car is very rare, because of its safety, load capacity and high stability, so only in some low-grade off-road vehicles and heavy trucks should be used.
Tire type markers mostly as 215/70R15, the meaning of these figures are: 215 said tread width, the unit is mm, the general tire width between 145-285mm interval of 10mm; 70 is flat, the tire wall height and tread width ratio of 70, representing 70%, general tire flat ratio between 30%-80%.
The front and rear tires are not the same size, and the rear wheels are larger than the front wheels.