How to roll a fender lip?

I know my boo-boo is going to cost me a workable amount of cash. I'm researching different 15x7 wheels with 4.50-4.75" of backspacing. Another option is to get some smaller tires. I have 255/60-15's now. They are 10" wide and I like the look. Going down to a 245 gets me down to 9.6" wide which would work if I roll the fender lips. A 235 would easily solve all my problems with no modifications as they are 9.3" wide.

Many thanks to all who weighed in on this topic to help out.