Anybody buying tires should consider the DOT number on the tires. This tells when the tire was made. Any tire reaching 6 years of age is a gamble, especially if towing/driving in high heat. I see many thinking they got a great deal on used tires because they have little wear. However, they drive their familys to the river at 80 mph plus with old tires waiting to let loose. CHCK THE DOT BUILD DATE AND SAVE LIVES AND YOUR TOY.