Tire manufactures give mileage warranties on products to back a products quality providing an additional selling point for that tire.
When a retailer tells you that a tire has a warranty, there's more to it than "So it must be good" AND "So if it blows I'll get a new one" sort of mindset.
IMPORTANT: Bear in mind. In order to get a credit back from a tire that did not last as long as it is warrantied for, you will need to meet specific criteria to collect on that warranty.
- Stores will want you to have rotated the tires consistently.
- Alignment needs to be in spec.
- The warranty will be void If your tire has uneven wear, lack of rotation documentation, improper air pressure, unbalanced, or any other well know causes that lead to your tire wearing unevenly.
- Just because a tire does not have a mileage warranty does not mean that it is a bad tire that will not last.
(Many tire genres simply do not have warranties - I.E: Summer Performance, Max Summer Performance, Autocross, Mud Terrain)
- All-Season tires are the most common genre of tire to carry mileage warranties.
- Tire warranties bring additional credibility to the tire.
- It shows that the manufacturer believes the product will last X amount of miles so long as the tires are maintained.