Two of the most common symptoms indicating a vehicle is out of alignment are uneven or rapid tire wear and steering drift away from a straight line. Vibration, shimmy and noise can also indicate a need for tire alignment. To perform a tire alignment on the RV means to adjust the direction of wheel travel in order to align the wheels with the centerline of the vehicle chassis.

Tire wear can help pinpoint problems from suspension or air pressures. Excess wear in the center of a tire is indication tire inflation pressures are too high, causing the tire surface to become convex and ride on the center. More wear on the sides and less in the middle can signify air pressures are low. When the tire tread develops rounded edges or one-sided wear, this is generally indication that the vehicle is out of alignment. Front and rear tire pressures may differ due to vehicle weight, but all tires on the front and all tires on the rear should not vary in pressure from side to side. Unusual wear patterns can develop when there is more than a 3-pound air pressure difference between tires on the same axle.

Have the RV inspected for alignment when the vehicle is loaded, weighed and the tires are filled to the recommended air pressure. To maximize the use of RV tires and the alignment, balance the load for good suspension. Align the load according to heavy and light points. For example, in a rear engine diesel, store heavy items towards the center rather than at the back.

Thrust alignment refers to the front only; full alignment means front and rear. Some specialists may also refer to this as four-wheel or six-wheel alignment. Expect a full analysis and alignment to take a half-day or more, depending on seasonal business. To maximize tire wear, weigh the coach often to maintain proper tire air pressures and load the vehicle according to manufacturer recommendations.

Have the alignment checked after tire changes. It is not necessary to inspect the alignment each time the front wheel bearings are packed. However, in the event king pins are replaced due to wear, it is recommended that an alignment also be performed.

Frequently monitor all tire air pressures. Check the tires when cold. For specifications on vehicle ride height, contact the manufacturer direct.