In late December 2009, we decided to roll the fenders. When we had the car lowered in the summer and fall, we managed to clip a fender and mess it up with the front wheel. With the Eastwood Fender Roller (which we rented from Ken at 3G Customz) we got the lip tucked in nice and tight, giving us about a 1/2 inch of additional clearance.

Watch the video we found on YouTube. It's the best explanation on using this tool we could find.

We didn't do all the way to the rocker, mainly the area between the arrows where the tire is most likely to clip.

Don't forget to use plenty of heat to soften up the paint, or it WILL crack!