I use these tires on Zipp 303S Rims for all road riding and very light gravel. I mount them without using a lever but it takes patience. I also have to use an air accumulator tank to get them to seat. The first set of tires only lasted 1,000 miles even though the tread indicators were still visible. I swapped them out because of cuts on the front tire and tread damage to the back tire even though they never went flat during a ride. Road and bike path conditions where I ride are horrible and encounters with broken glass, tree debris and cracked and bumpy pavement are frequent.
