I know they are older than dirt and that was my biggest fear, they'd be coming apart on the freeway like those damn POS Firestones did that damaged the driver side bedside and the car behind me. I know it wasn't hot, but I had the K1500 loaded, and towing the trailer with the scrap truck on doing 65 and decided I better slooooowww down a bit just in case, but they did fine, didn't make any wierd noise, lose air pressure or anything. Traction seems to be good in the dirt and gravel at my dads too. There was one area my dad said, No way in hell I'd make it that I better wait for him and the tractor. Phhhfffftt. Walked right up towing the trailer even with the scrap on it. The last guy in a Dodge who tried, FAILED miserably, lost traction, slid backwards and about rolled his truck into the creek. So they can't be to bad.