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Tread is measured in 32nds of an inch. Tires are considered worn out at 2/32".

How are credits calculated?

Mileage Warranty

  1. Miles driven = Current odometer − Purchase odometer
  2. Usage ratio = Miles driven ÷ Warranty miles
  3. Credit = Purchase price × (1 − Usage ratio)
  4. With Road Hazard + less than 25% used → Full refund

Tread Depth Warranty

  1. Usable tread = Original tread − 2/32 (wear limit)
  2. Remaining usable = Current tread − 2/32
  3. Credit = Purchase price × (Remaining usable ÷ Usable tread)
  4. With Road Hazard + less than 25% used → Full refund