Was at wannabe2's yesterday and we checked his 021's for tread depth now that he some miles on them. We checked the tread depth to the wear bars with a tire depth guage that I have when we first installed them. He has about 6K on them now, riding environment, commuting to work and a run to the dragon and back, looks like he is averaging about 2K per 32nd on the front and about 15 hundred per 32nd on the rear. Looks to be about in the 11k range to the wear bars on the rear for an average, YMMV. :biker: