Recently I've been on a couple of rides, with a new group, where one of the guys flatted and just rode back to the start. In both cases we were between 2 and 4 miles out. Both times it was the rear tire and both were completely flat. One was a clincher and one tubular if that matters. The rider with the clincher had a long rip in the tire, the tubular rider was offered a spare tire but declined it. Both bikes were fairly nice road bikes and this group averages 18-20 MPH. The only reason I mention speed is these guys seemed like experienced cyclists, at least more than I am. In one instance another rider offered to go back and return with a vehicle to SAG the guy in, this was declined.
Doesn't this tear up your rims? Is it dependent on rider weight, I don't remember how big these guys were? I've never seen this before and am wondering if it's an okay option to consider?