why double tyres are used at the back of a heavy vehicles like trucks and buses
Answers
Buses and trucks have double wheels at the back because these are heavy vehicles with most of the loads resting towards the back. Also, the engine that drives the vehicle is attached to the back wheels so the double back wheels provides better hold on the ground.
Hey mate here is ur answer......
Trucks carrying heavy loads so they use souble tyres at the back but mostly they use eight tires to reduce the pressure on its tyres. As the surface area increases the force/load is spread over a larger area and hence reducing the pressure. This reduction in pressure allows the truck to move better and also protects the tyres from excessive wear and tear.....
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The trucks and buses have wider tyres with respect to the property that " more the area, less the pressure". As the area is more the pressure will decrease, so there will be less need for applying more pressure to handle the vehicle. The vehicle will move smoothly....
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