(Eli5) Why do Buses & Trucks use 2 skinny wheels put together on each side of the axle? Instead of just using one fat wheel?
In: Engineering
Rudundancy. If one wheel goes flat or blows out the vehicle still remains stable. As well it is added traction at the drive wheels. That much weight on the wheels causes greater wear, by adding more tires it spreads that weight reducing wear.
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