I had two different sets of Toyos that failed and after the first set failed and the second set installed, the rv was all over the road. I was told that I needed to "break" them in. After about 4,000 miserable miles I returned to the tire dealer and replaced them Michelin XPS. My philosophy is that when it comes to tires and brakes one can't get too good quality especially when the family is counting on you making the right decision.And,by the way, Toyo gave nothing but grief over my complaints about their tires which made me more determined to shove them back in their faces. Never again Toyos. The Michelin XPSs ride and handle like a tire should-perfectly. Also don't know why some say they ride harsh. I don't notice it.