I'll need new tires on one car soon, and they had a 75,000 mile tread life warranty. They're 3 years old, and have gotten so far 42,000 miles or so. Per an AI query, A tire mileage warranty, also known as a tread life warranty, guarantees that a tire will last a certain number of miles before the tread wears out. If the tires wear out before the warranty period, the manufacturer may provide a prorated refund. How it works The warranty typically covers tires for 4–6 years. No prob, only 3 years old The warranty only applies to the original owner and vehicle. Check, still me. To be eligible for a claim, the tires must have worn evenly and be down to 2/32 in of tread. Umm, probably not YET, but within the next 5,000 likely. The owner must provide service records that prove the tires were rotated regularly. I have those, but their definition of "Regularly" may differ from mine. The owner must also provide proof of purchase and vehicle mileage on the original installation date. No problem. Got it. The owner must prove that the tires were properly inflated and aligned. How the hell do I prove this? ALWAYS properly inflated and aligned? The owner must replace worn suspension components as necessary. Again, how is this proved? Or should I just be happy that I got 45,000 or so out of the tires in question?