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TIRE WEAR PATTERNS Under inflation will cause wear on the shoulders of tire. Over inflation will cause wear at the center of Excessive camber causes the tire to run at an angle to the road. One side of tread is then worn Excessive toe-in or toe-out causes wear on the tread edges and a feathered effect across the tread TIRE NOISE OR VIBRATION Radial-ply tires are sensitive to force impulses caused by improper mounting, vibration, wheel defects, or possibly tire imbalance. To find out if tires are causing the noise or vibra- tion, drive the vehicle over a smooth road at varying SERVICE PROCEDURES ROTATION Tires on the front and rear operate at different loads and perform different steering, driving, and • Increase tread life • Maintain traction levels • A smooth, quiet ride Other rotation methods can be used, but they will MATCH MOUNTING Tires and wheels are currently not match mounted at the factory. Match mounting is a technique used to Fig. 4 Tread Wear Indicators 1 – TREAD ACCEPTABLE Fig. 5 Tire Wear Patterns 22 - 4 TIRES AND WHEELS WJ DIAGNOSIS AND TESTING (Continued) |