How Much Cutting On Fenders With Wide Rims???

[gtpvette]

My new rims should finally ship next week. With that cutting of the fenders is right around the corner as they'll stick out 1.5" past the fender give or take as bit. I'm trying to get an idea how much you guys running wide bodies have cut to keep the tires from hitting the fenders in suspension compression and in turns.


I did see one RB install thread where the OP cut 50MM but I don't know if that's the norm and haven't seen any other numbers. I'd rather only cut as much as needed and the plan is to measure with springs removed once tires are mounted but thought I'd check and see as well.


Care to share what you've done??


For the record I'll be running Forgestar F14's 18x10 +10 285/30/18 Continentals square. Note tire height is stock 24.7" ish.

[fx1mark]

Have you checked youtube? there are a few videos there that will give you a good idea how much to cut.

[edwardl]

[ame]https://www.youtube.com/watch?v=yP4bF1bbxhQ[/ame]

[x808drifter]

Enough to ruin the cars resell value.

[gtpvette]

fx1mark & edwardL,,, thank you gentlemen,,, I've watched a bunch of those but I can't seem to find any that talk about specific measurements. In the video shown he lays out cut lines but how does he come up with them???? I guess I could kind of eye ball them based on his tape lines but I'm looking for something more specific. Somebody had to measure this right???

[KnightRyderx2]

I haven't seen any numbers as far as how much to cut. I usually see them put down a bunch of tape on the fender then mock up the over fender and mark inside the over fender leaving a decent amount for the over fender to secure to. The only part that secures the over fender down is the rivets so just leave enough metal for that and to give the over fender structural stability.

[tyler_win_photo]

Cut the least amount of material as possible. A lot of people I've seen make a base cut, test the wheel and tire setup for clearance, then cut more as needed to clear.

You can always cut more but you can't cut less.

[8RZ]

There really isn't an exact number, you just have to eyeball it. Scary huh?

[86MLR]

You can work out clearance required for your rim and tyre of choice.

Much like they do when designing coilovers.

I believe it's the following:

Remove spring from damper, fit damper to car, fit wheel and tyre to car, jack up wheel and tyre to bumpstop.

If it hits the body before the bump stop measure how much travel is left, use that as your measurements for trimming.

There are videos on how to do this >

[sqd]

I just looked at pictures I found online of cars that had been cut, eyeballed with some masking tape and got to cutting. Test fit your wheels with the tires you're gonna use, and then figure out if it has enough clearance for suspension compression. It isn't as hard as it seems, really

[gtpvette]

Well dam,, figured someone had measured,, guess not. Will do some measuring this weekend and post back

[evomike]

Originally Posted by x808drifter

Enough to ruin the cars resell value.

the cars have no resale value anyway, honestly I do not think this kit ruins the resale at all if done properly.

as for the cutting amount that really depends on how you want the car to sit height wise, i cut a lot of the fender on my car and i mean A LOT but my car is extremely low. Its a case by case kinda thing really.

[wutangbrz]

keep cutting until you stop rubbing pretty much