Direction of Rotation
On standard tires with symmetrical tread patterns, it does not matter which way the tire is fitted on the rim and in which position it is fitted on the car.
Some tire manufacturers have, however, started producing tires with specific directions of rotation in order to improve wet grip and optimize noise generation.
The direction of rotation is marked on the side of the tire with an arrow. This side of the tire must be on the outside, and the tire must roll forwards in the direction of the arrow for optimum tire performance.
A number of tires with asymmetric tread patterns are also now available which do not have a specific direction of rotation.