Originally Posted by
HTupolev
Second, the Stampede Pass has a nominal width of 32mm, whike the 4.5 AR is optimized for tires of 28-30mm. A too-big tire can prevent the rim from smoothly capturing the airflow off the tire, compromising the purpose of the wheels. Not a huge issue, but one that I'd care about if I was dropping $3000 on a wheelset.
For what it's worth, a set of nominal 28 mm Schwalbe Pro Ones measure 33.6 mm on these rims. (As reported by other owners, I don't have calipers myself.)
Enve recommends 28 mm tires for the clincher version and 30 mm for the tubular version of these rims.