I was taking a tight right turn and my rear clincher rolled right off the
rim. I am using Cane Creek Aerohead wheels, and have noticed that mounting
tires on the velocity rims is a lot easier than with any other rim I've
ever used. Has anyone else had similar experiences with rims on which it
is too easy to mount tires on?

Note: during the turn I was holding the bike more upright than usual as I
was trying to pedal. Tire is a Specialized Comp Turbo 700x26c. Tire
pressure was around 110psi.