How Many Axles Does a Semi Truck Have?
A standard semi-truck pulling a common 53-foot semi-trailer typically has five axles. One steer axle, two drive axles, and two trailer axles. Together, these axles commonly support 18 wheel positions, which is where the term “18-wheeler” comes from. The steer axle sits at the front of the tractor and supports the front wheel ends. Behind




