Why do big trucks have small tires?
Trucks weigh and carry more weight and the bigger tire has a higher weight rating larger brakes, differential,steering and suspension pivots are also fitted and need a bigger wheel to fit inside of.
Why are heavy vehicles provided with extra tyres?
Heavy vehicles have broad tyres because broad tyres have large area of contact and less pressure on the ground. Because of this, heavy vehicles (like tractor) can move even on soft roads and fields without sinking.
What makes a TYRE illegal for a large vehicle?
The tread depth of your tyres must not fall below the legal minimum measurements. The legal limit for car tyre tread depth is 1.6mm – so you should consider changing your tyres at around 3mm. However, if your tyres do fall below 1.6mm, these are then classed as illegal tyres.
Are smaller tires better?
RAY: Smaller wheel-tire combinations provide better mileage, better acceleration and a quieter, more comfortable ride. Usually as a wheel gets larger, the tire’s sidewall gets smaller, so the total diameter of the wheel-tire combination stays about the same.
Why are heavy vehicles provided with double wheels at the rear end?
Trucks and buses generally have double wheels at the back to increase the area of contact on which their weights acts and hence reduces the pressure on the ground.
Why do the load carrying heavy vehicles?
Answer : Heavy vehicles carrying load have large number of wheels is to reduce the pressure on tyres. As area which force is exerted will increases, pressure will decreases. This will help in the smooth motion of vehicles and protect the wheels from excess wear and tear.
Are second hand tyres illegal?
part of the Consumer Protection Act, it is an offence for anyone to sell part worn tyres that do not meet the following principal requirements: The structural integrity must not be compromised. It should be free of large cuts, any bulges or lumps both internally and externally.
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