If your talking about that 1/2 to 3/4 inch lip the fender trim (if you have trim) mounts on...then ya I did on my 69 roadrunner, just to keep from chewing the sidewall out of a set of slicks on those big bumps in the road. Results ..easy .......would I do it again on a nother car...no... even tho you had to look really close it left a ever so slight dimple every few inches (keep in mind at the time I was young , had no proper tools to work with, and was more interested in fast than looking pristene