I was looking for a 28mm tire, and these are the only tires BTD that come in tubular. I've had pretty mixed results. The outer tread delaminated from the main casing after about 400 miles. That was on a front tire. I kinda expected to get at least 1500 miles from these tires. I did manage to ride the rear down to the treads, so I guess one out of 2 isn't too bad.