I've been away driving my G37 all over states to get the real for my coils. They finally settled in.

First off, I love the whole BC Racing coilover w/ swift spring upgrade set I have, the handling is astounding, but I have ran into an issue. It seems to me that with me running 285/35/19 Michelin Ps4 XL tires on the back, it causes my back liner to be rubbed on.

What I mean..... whenever I step on the gas or floor it, it will rub.
Whenever I go up hill and give it gas, it will rub.
Whenever I go over slight dips or bumps, it will rub.
Whenever I turn left or right and accelerate, she will rub.

Now I have played with the dampening for a week now and I just cant seem to get it right. I have the rear damp set into about 17-19 clicks in. The front is about 6 clicks away from the stiffest feeling, yet it has helped with the rebound in the back. I really dont want to raise her .5in due to the fact she looks perfect the way she sits now.

It becomes a further problem when I have any passengers. Doesn't matter if its >100lbs or more. Matter fact, groceries even make her rub a lot more.


I know the solution is to raise her (which I dont want), I can also roll the fenders even though they clear fine. I am hoping any members can help me out with proper settings, or their guru magic so I can maintain my flush look.

Any and All help appreciated.

 

Some crappy pics to get a better understanding on how she sits.

 

You can experiment with stiffer dampening on the coilover. Or, swap in a higher weight stiffer swift spring. Or, you can go to a smaller tire. Or, you can go to air suspension. Finally, the cheapest option, you can raise the car slightly.

Also, are you sure you are rubbing on the fender liner and not the tabs? The tabs can be trimmed.

 

The tires on the back still have about 2 inches before it touches the liner, fender does not appear to be in the way, I'm not sure what you mean by tabs.... I do know that there is a small squarish feel on the fender liner in the back to which I feel that's where it's rubbing.

The ride was absolutely fine for about two weeks, no rubbing nothing, then all of sudden I started to hear this noise, which I assume the coils settled in. I know it seems ridiculous but when they set in was in the change in inches so I am be able to counteract it.

 

Trim the liner. I trimmed mine about 4 inches up

 

Our fenders are technically already slightly rolled from the factory, so rolling it more would give you bacon fenders. Worse case scenario, you could have them pulled. I would raise the car a bit or maybe even adjust the camber if you have the adjustable arms (though you risk compromising tire wear if you go that route).

 

Hes rubbing liner not fender. Trim liner and be done.

 

I'm interested in trimming the liner, how would one go about doing such things.

 

Search.

Fender liner trim.

pull wheel. Look for black mark from tire rubbing. Take blade and trim. Put on wheel and drive. If still rubbing repeat until solved

 

Make sure its liner and not bumper tab. If its tab cut and relocate it. Theres a diy for that too. Search.