How to roll a fender lip?

Plus, as many times as I've preached it, the Percy's tire and wheel measuring tool will tell you exactly how big a tire and wheel, what offset, backspace, width in all diameters will fit under your car. I just cannot understand why people continuously want to cheap the **** out and try to do things without proper tools. 75 bucks for the Percy's tool and you wouldn't have to be doing this all over. Dammit all. lol