What does excessive wear on the outer edges of the tread of a car's tyre generally indicate? What does excessive wear on the outer edges of the tread of a car's tyre generally indicate?

• Possible answers:

   
• A. The tyre has been used over-inflated
• B. The tyre has been used at excessive speed
• C. The tyre has been used under-inflated
• D. The tyre has been used on the wrong axle