My local friend with a Clem L asked for some help today. She was having trouble getting the Continental Contact Speed tires off the cliffhanger rim wheels of her Clem L. When I took a turn at it, I was surprised at how difficult it is to get a lever under the tire bead. Looking at he Velocity page, I noticed that they are advertised as close fitting and that a thin rim tape must be used. The wheels shipped from Walnut Creek with that rim tape so I kept looking.
I noticed the center of the rim track was depressed from the edges, so when I squeezed the tire so that the beads were over the center, all of a sudden, there was space for a tire lever to get in and work. They were tight to start with but once started, they come off like any other tire. I've not ridden Cliffhangers but have noticed that they are mentioned here pretty often.
Am I the last to discover this? :)
Tailwinds