To those of you that are stating poor performance from Carlisle tires... If your Carlisle tires were made before 2012 you probably didn't have the "new" design. I have had the old ones too and can state they were really poor. I bought a set of new Radial Trail RH (225/75R15 E) when they first came out that were dated late 2011. In the 10 years before the new Carlisle's I averaged 18 months before one of the set (other ST brand) separated, I replace all 4 and tried again. I ran the new Carlisle's for 5 years and about 15,000 miles, not one problem. They looked almost new but I was getting nervous about their age so I replaced them with a new set of the Radial Trail HD. Hopefully they will last as long.