An axle having a shallow "U" shape is oriented beneath the vehicle so that side and bottom sections of the U-shape extend either forward or are angled slightly downward and connected to the chassis through trailing links of different lengths whereby the axle rotates during vertical movement of the road wheels. The axle is disposed in the vehicle so that as the axle moves vertically, the ends of the axle pivot up on either side of a tire housing while the center or inboard portion moves through a smaller distance into a clearance between the tire housing and a fuel tank.