fender rolling?

[auspex]

What exactly is fender rolling, how hard is it to do, and are there any disadvantages?

i wanted to put some 17x7.5 wheels(looking at rota torques, soobydude), but what do folks have for tire recommendations? I could do a lot of searches, but I want legacy owner experience!

I like to drive aggresively on occasion, but I don't race or auto-x. I do live in Idaho and will use my stockers for winter, should I still consider an all-season ? not a ton of rain, but defintely some.....

Thanks folks, rubbing scares me.....

mike

[Huffer]

Tire/wheel calculation.
http://gs.tolan-hoechst.com/tirecalc.htm

Fender rolling:
Wheels: What is "fender rolling?"
A. The “fender” is the area that houses the wheel and tire of a vehicle. There are several reasons why a vehicle may require fender rolling. After a vehicle’s suspension is modified, i.e. with lowering springs/shocks, a vehicle’s height is significantly lowered, thereby closing the gap between the fender and tire. Also, installing larger-than-stock wheels and tires decreases the gap between the fender and tire. Thirdly, partially due to larger-than-stock tires, issues may arise with the rear tires lightly contacting the splashguards due to suspension squat under heavy acceleration. By executing any one of the previous actions, a vehicle’s stance is lowered, thereby significantly closing the gap between the fender, or wheel well and the tires. These actions may require fender rolling to alleviate any tire-to-fender contact.

For more information on the process of fender rolling, please visit www.overboost.com (http://www.overboost.com) and search "fender rolling" and read article, "Project M3PO - Stiff Upper Lip."

[mranlet]

Rolling - Crushes the inner lip of the fender upward
Before:
http://www.hvresource.com/b15sentra/Rolling3.jpg
After:
http://www.hvresource.com/b15sentra/Rolling4.jpg




Pulling - Moves the fender edge outward
http://tom.actionfit.com/fendroll9.jpg
Rolling and pulling use a "fender roller" like this.
http://tom.actionfit.com/fendroll1.jpg
Rolls require low pressure while pulls require higher pressure.




Flipping - Bends the inner fender lip down and outward. Only for extremely aggressive offsets.
http://www.buckaloose.com/temp/hg50_part01_19.jpg
http://www.buckaloose.com/temp/hg50_part01_27.jpg


Links of interest:
http://tom.actionfit.com/fenderolling.html
http://vipstylecars.com/forum/index.php?topic=240.0

[jey]

The disadvantages are that changing the shape of the metal on your fender will stress the paint on it. If you do it carefully, you can minimize that, but if you do a sloppy job you can easily crack the paint.

It's not hard to roll a fender with a baseball bat, but hard to do carefully. I would suggest a proper fender rolling tool at least, unless you plan on repainting your fenders soon anyway or you don't care.

I like the Kumho MXs for aggressive driving, and even for autocrossing. Absolutely fantastic amounts of grip. Work well in the rain too.