Originally Posted by justinb

I've run 44c Mutanoraptors on my CXP33's. They feel squirmy at low pressures, but I never thought the tire was about to come off. Getting a wider rim will improve the tire profile and make it a bit rounder. Put them on and find a grass field, do a few hard corners at speed, and see how they feel. If you can't get enough traction there to pull the tire off, you probably won't find it on the dirt either. Plus, the penalty for failure is minimized on nice soft grass.