Rear suspension bolts may not have been properly torqued. Rear suspension bolts that are not correctly tightened may cause the alignment angles of the rear suspension to change over time. If this occurs, this can lead to pre-mature tire wear. Check the rear axle alignment and torque of the rear suspension adjustment bolts. If the any of the bolts are not at the correct torque, the rear axle alignment will be corrected as needed and the adjustment bolts torqued to the proper specification. The tires will be checked for premature and uneven wear. If found, the tires will be replaced as necessary.