Quote:
Originally Posted by landon2345
One of my teammates mentioned "dually?" trucks (pickups with four wheels on the back axle - two on each side). He was talking about how the increase in traction allowed it to pull more weight whereas a pickup with the same engine and only 2 wheels on the back axle would have its tires slip and would not be able to pull a heavy load.
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Trucks use dual wheels because each tire can only carry a limited amount of weight, and using two tires next to each other doubles the load capacity of the truck (assuming the axle, springs, etc are strong enough).