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Tread & Wear
Tread depth in 32nds and millimeters, the penny and quarter tests, uneven wear patterns, and how many miles tires last.
3 guides
- Interactive
Tire Tread Depth Chart: When to Replace Your Tires
A tire tread depth chart in 32nds and millimeters: what 2/32 and 4/32 mean, why rain changes the math, and how to measure your own tires in five minutes.
4 min readRead
How Long Do Tires Last? Miles, Years and Warranties
How long do tires last? Why tread, age and damage each set a limit, how treadwear warranties differ from UTQG grades, and what Florida heat changes.
5 min readRead
- Interactive
How to Check Tread Depth: Penny, Quarter or Gauge
How to check tire tread depth with a penny, a quarter or a gauge: what each test shows, where the wear bars sit at 2/32 and why 4/32 matters on wet roads.
5 min readRead
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