I just installed these tires within the past few days and have only put just under 500 miles on them. When they arrived, I noticed they were pretty light and had a flexible sidewall considering they were going on a light duty pick-up. This was to be expected since it's technically designed as a passenger car tire. I didn't want to a) spend a lot on a premium tire for my older pick-up and b)want an overly stiff truck tire that would sacrifice the ride. I opted for the Khumo KR21 given the price and both having good personal experience w/ the brand in the past and hearing positive remarks from others... Once the tires were mounted on the truck I was totally pleased. With 32 PSI the sidewalls stayed firm (no sag) and the tires ran very sooth down the highway. They are incredibly quiet, smooth & cushioning, and handle quite well. There is no wander at the wheel. I have had no chance to experience the performance on wet surfaces or in in-climate weather, nor have I had enough time to rate the tread wear. For those of you out there with light pick-ups looking for a decent tire for a reasonable bargain, try the KR21.