When the hub mounting surface is centered within the rim.
Designed specifically to help provide better traction in freezing conditions. The pliable tread in winter tires remain soft in cold temperatures, making them different than all-season tires.
When a tire is fitted to a wheel it is measured for balance and correction weights are applied to take away an imbalance.
Vehicle’s are required to have placards with tire information in a general location and common format. Vehicle placards list tire sizes, tire pressure, load carrying capacity, and speed rating.
A device that is used to let air out of a tire. The valve core keeps other air from escaping.
The Uniform Tire Quality Grading was created by the U.S. Department of Transportation to inform consumers of prevalent information needed to purchase tires.
An indicator bar that is molded into a tire. The bar is located at the bottom of the tread grooves in a tire. When the bar becomes visible, this is an indication that the tire needs to be replaced.
The expected life span of a tire before it needs to be replaced. The Penny Test can be used to determine the status of the tread life.
The measured distance from the bottome of a tire’s tread grooves to the tread surface. A 4/32 or deeper tread is good and anything less than 3/32″ means the tires need to be replaced soon.
The rubber part of a tire that makes contact with the road. Tire tread can often become worn and need to be retreaded over time.