What tire wear is associated with lack of tire rotation or unbalanced tires?

Cupped wear occurs when there is a lack of tire rotation or unbalanced tires. This type of tire wear is characterized by a series of high and low spots around the tire tread, which creates a wavy or scalloped appearance. It results from the tire bouncing as it rotates, making contact with the road in an uneven manner. This uneven contact can be exacerbated by improper alignment, suspension issues, or insufficient balancing, leading to significant vibrations that promote this wear pattern.

In contrast, feathered edges typically indicate a different issue, such as misalignment, where one side of the tread wears more than the other, creating a sharp edge on one side. Chopped wear is usually related to a defective tire or uneven loading but is not primarily caused by lack of rotation or balance. Center tread wear suggests over-inflation or consistent high-speed driving, which also does not directly relate to the consequences of not rotating tires or unbalancing.

Understanding cupped wear is essential for identifying tire maintenance needs and ensuring optimal vehicle handling and safety. Regular tire rotation and proper balancing can help prevent this wear and extend the life of the tires.