Why Improper banking of roads cause wear and tear of tyres?

Answer 1

The nessecary centripetal force is provided by the friction of the road and tyre hence causes wear and tear of tyres

Answer 2

When a vehicle(4 wheeled) takes a turn....the Centrifugal force comes into the picture, pulling the vehicle out of its usual curvature path. Banking is done to avoid it effect. It counters the Centrifugal force by adding an amount of Centripetal force(The raise in the level at the exterior corner results in inward force which is nothng else but Centripetal).

In the absence of this banking, when a loaded vehicle takes a turn, the load istead of balancing of 4 tyres....loses it and makes a stress(its massxgravity) on the 2 tyres which are towards the exterior curvature. The vehicle tries to counter the Centrifugal with the friction between the tyre and road.Thus leading to wear and tear of tyres.

And in some unfortunate situations, in the absence of banking, when the vehicular speed exceeds....it gets UPSIDE DOWN!.....As we discussed...the Centrifugal force pulls it out!

Answer 3

Improper banking will allow the car to slide slightly, which will increase the wear on tires over time. Most people drive faster than the road conditions allow when using unbanked roads, which definately increases the wear on tires over time.