Extreme tire wear on the inside edge indicates excessive what?

• A. Positive camber
• B. Toe-in
• C. Negative camber
• D. Toe-out

Answer: (C)

Extreme inner-edge tire wear happens when the wheel has excessive negative camber. Camber is the tilt of the wheel from vertical when viewed from the front: negative camber means the top of the wheel tilts inward toward the vehicle. With too much negative camber, the inner edge of the tire carries more load and makes contact more during driving, so that inner tread wears down faster while the outer edge wears less. If camber were positive, the top would tilt outward and you’d see wear on the outer edge instead. Toe alignment can also cause edge wear through scrubbing, but the pattern described points to camber being the culprit. Have the suspension alignment checked and camber adjusted to the vehicle’s specification to even out the wear.