I lost the Rock N' Roller wheel on my Colorado 400t twice now. The first time I was lucky enough to find it but not the last time. I had it mounted using one of the handlebar mounts on my motorcycle and had spent a day rummaging through some tight brush and when I got back to the truck I realized it was gone. Garmin did send me a replacement. :D
Has anyone else had issues with theirs popping off? I'm afraid to use it on my handlebar mount anymore . . . a nice wrap around casing of some sort would be nice.