why do heavy vehicles have broad tyres?

Wide tyres are used in heavy vehicles like truck to spread the force over the large area of contact and pressure at a point becomes low since
pressure= force/area
So, larger the area in contact lesser the pressure in tyre and more is grip on road because the weight of truck is spread over the area
One more example is the tracks of trains in between two rail lines, there are lots of horizontal wooden timbers or tracks for the same reason.

 

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Heavy vehicles have broad tyres to sustain the weight of the vehicle.

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Heavy vehicles have broad tyres to sustain the weight of the vehicle.if the heavy vehicles have small tyres then the vehicle cannot go fast and sometimes by this accidents may happen.

pls thumbs up ...

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Heavy vehicles have broad tyres because the more the area of contact the lesser the pressure.As the pressure will be less the tyres will be able to lift the weight of the heavy vehicles.

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