Excessive heat buildup can cause tires to wear out faster, or could even lead to tire failure. According to this NHTSA page, the Firestone Wilderness AT and Radial ATX II tires have a temperature rating of C. Service Description The service description consists of two things: Load Ratings:...
As for how long a tire will last, it all depends on how much you ride and your riding style. Someone who rides at high speeds with aggressive cornering and acceleration will wear out their tires faster than a more relaxed rider. By the same logic, someone who rides a lot will obviously...