My Trek Domane came with Bontrager R1 Hard Case Lite tires. I had to have the front one replaced at 600 miles because there was a bulge in the tire. The bike shop replaced it under warranty. So, now I have a total of 1,112 miles on the bike with the rear tire having that as total miles and the front having 512 miles. How long do you usually go on your tires before replacing them? I'm guessing this question may have two answers.....new tires that come on the bike and an answer for your replacement tires. Although I can't complain about these tires, other than the issue mentioned....which I'm sure could happen to and tire. I'm going to put Continental Grand Prix 4000 S II tires next time because of good things I've read and heard about them.