Treadwear warranties explained
A 70,000-mile warranty does not mean the tire will last 70,000 miles. It means that if the tread wears to the legal minimum before that, the maker will credit a prorated share of a replacement.
What you actually get
If a 70,000-mile tire wears out at 50,000, you get roughly 20,000/70,000, about 29 percent, off the current retail price of a new one from the same maker, not the sale price you paid. Mounting and balancing are on you. It is a modest benefit, and the makers price it in.
The conditions
Almost every warranty requires:
- rotation every 5,000 to 7,500 miles, with receipts
- even wear across all four tires (uneven wear points to alignment, which voids the claim)
- the tread worn down to 2/32 inch, measured by the dealer
- the original purchaser, on the original vehicle, within a time limit, often six years
Miss a rotation record and the claim is usually denied. Keep the receipts in the glovebox.
Why we use it anyway
The mileage figure is the maker's own forecast of tire life, set by people with wear data we can't see and a financial incentive not to overpromise. Across the market it tracks real life reasonably well, and it is the only life figure printed for every tire. That is why warranty miles per dollar is our value rating, and warranty length gets a further 10 percent of the score. See the longest-warranty list.
Tires without a warranty
Max-performance summer tires and some OE-replacement lines carry no mileage warranty at all, because the makers won't forecast the life of a soft compound. For those, our value rating falls back to price within the category.
Reading warranty length
- 80,000 miles and up: a long-life touring tire, usually with a harder compound and less wet grip than a 60,000-mile tire from the same maker.
- 60,000 to 70,000: the mainstream for touring, grand touring, all-weather and highway tires.
- 45,000 to 55,000: ultra-high-performance all-seasons.
- 30,000 or none: summer tires.