Question

Lorries and trucks carrying heavy loads have a eight instead of four

Answer 1

Hi..
It is to balance the weight as they are loaded with excess loads..to transport...
Hope this helps u!!

Answer 2

Answer:

Larger area produces lesser pressure on the ground.

Step-by-step explanation:

Trucks carrying heavy loads use eight tires to reduce the pressure on its tyres. As the surface area increases the force/load is spread over a larger area reducing the pressure. This reduction in pressure allows the truck to move better and also protects the tyres from excessive wear and tear.