Hi I know in the past the Carlisle tires had gotten a bad rap so when I went to buy some trailer tires, I was going to get some Maxxis tires. I bought some Carlisle tires instead (83 vs 130 for the Maxxis) at Discount Tire, which the sales guy said that these had been completely redesigned and tested. I bought the 13 dollar warranty just in case as I was going on a long trip (over 4000 miles total). The tandem 3500 lbs per axle trailer had 4400 lbs on the way down and 5200 lbs on the way back, so the tires were not fully loaded but neither was I nearly empty. I hit plenty of pot holes and even ran the trailer off the road at one point in time going through a construction zone. I never did have one problem with the tires (although I did run these in cooler weather) even 300 miles at a time. Time will tell how well these tires hold up over their life but so far so good.