xj fender flares

How to remove the fender flares for a Jeep Cherokee?
I have a 99 XJ Cherokee needs more tire clearance. I have the same color Flairs. Do I have to pinch them off? Any form of articles? I may or may not relocate, so they do not want to destroy them completely.
Just to remove, if possible, do not find to buy a book called "Fender Flares for your Jeep" in the car section of any bookstore. It is a book on hand in The tutorial explains how to remove and install, and also tells all about all there is.
New tires plus Fender Trimming