About Dually Truck Wheels

Truck with dual tires on rear axle

The term "dually" refers to a truck with two sets of wheels on its rear axle rather than one. This provides a host of advantages including better handling, greater load capacity and safety benefits.

Function

The dually axle is the truck's non-steering axle. It has four wheels in total, two directly beside each other on each end of the axle. Since they distribute the truck's weight over more wheels, the tires last longer, provided they are properly rotated.

Benefits

According to the website Tire Rack, dually axles can handle twice the weight of non-dually axles. They also allow the truck to drive with a load temporarily in the event that one of the four rear axle tires goes flat.

Considerations

Dually trucks are more expensive than their non-dually counterparts, both in terms of initial purchase cost and tire costs. They are also wider than other trucks, making parking and driving through tight spaces more difficult.

References

• Tire Rack: Dual Tires for Light Truck Use
• AutoMedia: Newly Tired Dually