(3) Rib-and-lug pattern
This pattern combines the rib and lug patterns to provide stable driving performance on both paved and unpaved roads.
The rib pattern running along the center of the tire stabilizes the vehicle by minimizing tire side-slipping, while the lug pattern on the edges of the tire enhances driving and braking performance. The lug portion of the pattern is more susceptible to uneven wear.
(4) Block pattern
In this pattern, the tread is divided into independent blocks. Used on most snow tires and studless tires, the block tread pattern is now coming to be used on radial-ply tires for passenger cars as well.
The block pattern provides better driving and braking performance.
The block pattern reduces slipping and skidding on muddy or snow-covered roads.