I have more than 21,000 miles on a Commànderll 139/90/16 front and a couple of thousand left on my 13'R3T.Expected to get at least 20,000 out of rear,but when it was on the dyno 2"-3" chunk came out of it. The tire had about 17,500 miles on at the time with quite a bit of tread left.The rear is 185/65/16.