Question

One day Bujho went to a shoe shop to buy shoes. He saw all the shoes with rough surface
same rough surface was also present in tyres of bus and truck,
Why the surface of shoes, tyres of truck and car are made rough.
Ans​

Answer 1

Answer:

This is mainly done to increase the friction between the road and the tyre. The rougher the tyre is the grip between the tyre and the road is better. This consequently increases the friction which tends smooth vehicular motion.

Answer 2

Answer:

To extend durability

Explanation:

Because of they are roughness so they become durable and typres are rough because they are made of black carbon and it is rough a durable and also extend the grip of tyre