Why do trucks have dual rear tires

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Search for:. But why do these trucks have more wheels than other trucks, and what are the benefits? There is one clear risk to this style of truck. The dually pickup truck first appeared in , coming out from GM. At that time, they were available on commercial trucks or chassis cabs that could be customized. These trucks are useful for towing incredible sums of weight, whether personal or commercial, and have other differences aside from the extra wheels. These trucks also have a stronger and larger rear axle, plus a longer fender that can cover all the rear wheels.

Dual rear wheels can be found on some RVs and one-ton trucks per Tire Rak. There are also some commercial trucks that always come with dual rear wheels. According to Akin Ford , having dual rear wheels provides additional safety and stability when the truck is used for heavy-duty towing, like with a horse trailer, boat, or an RV.

The extra wheels help spread out the weight of the payload. An additional benefit is that, if a tire blows out, it is easier to maintain control with the remaining three rear wheels. The truck can then be driven and stopped safely. There are a few downsides to having a dually truck, some minor and one more serious. Off the bat, expect higher costs of maintenance since extra tires need to be purchased and maintained.