Tire cupping, also known as tire scalloping or choppy tires, is a type of uneven tire wear that appears on the tread of the tire as a series of abnormally worn patches among less worn parts of the tread. Cupped tires can be uniquely identified by their scalloped treadwear pattern and noise. The tread looks like it was scooped in 3- to 4-inch bits all across the tire, in the middle, or on the edge. Tire cupping can appear as if someone took an ice cream scoop and scooped out part of the tread every three to four inches around the circumference. The worn bits are caused by irregular up-and-down motions of a wheel (bouncing), which interferes with the proper contact of the tire with the road, scooping rubber in spots.

Tire cupping is typically a symptom of different vehicle suspension issues. If the vehicles suspension isnt working properly, whether there are worn or damaged parts, a misalignment, or a combination thereof, the tire may struggle to maintain the intended force against the road surface and lead to this tire condition. Some of the common causes of tire cupping include:

• Unbalanced or runout tires
• Misaligned wheels
• Loose, worn, or bent shock absorbers/suspension parts
• Poor-quality tires that dont offer as much tread or durability
• Damage from underinflated tires

Tire cupping is not something that should be taken lightly and ignored. If allowed to continue, cupping will worsen, resulting in other problems. Inconsistent contact with the road can reduce traction in an emergency, increasing the risk of a loss of vehicle control. If drivers experience rhythmic sound, louder than usual road noise, or see cupping on their tires, they need to have their vehicles tires and suspension checked by a trusted professional. To prevent tire cupping, vehicle owners should ensure that their tires are properly inflated, rotate their tires regularly, and have their vehicles suspension checked by a trusted professional.