Now I never checked mine until after I had the flat on the rear. It happened on past Sunday and was lucky enouph to have a chopper dealer with in a couple of miles who had a tire size 140-90-15 which stands about an inch or so higher that the tire that was on the bike, but when your stuck you have to make do. Anyway I did check the speedometer with this tire installed and now it reads right on the button so I guess the tire stays until its worn out. The tire that was on the bike was a bummer. The cord broke on the inside and cut the tube, I droped it off at the dealer to day but wheather or not they will do anything for me is a ?????.