What are the causes of uneven tire wear?

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Different types of uneven tire wear have different causes. For example, wear on both shoulder edges of the tire is due to insufficient tire pressure or overloading, while wear in the center of the tread indicates excessive tire pressure. Outer edge wear can result from excessive toe-in or camber angle, or a bent steering arm. Here are details about uneven tire wear: 1. Inner edge wear: caused by insufficient toe-in or camber angle. Feathering wear from the outer to inner edge is due to excessive toe-in, a bent steering arm, or unequal length of tie rods. 2. Feathering wear from the inner to outer edge: caused by excessive toe-out, a bent steering arm, etc. 3. Dish-shaped wear on the tread: This type of wear in one or more areas is caused by significant wheel imbalance, wheel bearing clearance, large wheel alignment deviation, ball joint clearance, tie rod clearance, bent axle, eccentric brake drum, as well as harsh braking, acceleration, and turning. 4. Wavy wear on the tread: caused by significant wheel imbalance, wheel bearing clearance, or large wheel alignment deviation.