Advice on how to fix rubbing
 

Going to try re-posting this in the correct topic area to hopefully gain more traction...

I just installed Swift springs and some aftermarket wheels. No other suspension mods. I do not want coilovers and I only do commuting and spirited driving with my Z. The front came out perfect. The rear has some negative camber and was tucked in slightly. I added one inch adapter to both sides on the rear and now it is flush to my liking.

Apart from the negative camber in the rear that I want to fix, my rear wheels rub against the wheel well and fender trim on bumps. How can I fix this? As for the rubbing, I was thinking about trimming the inner portion of the fender trim. However, if that doesn't work then I just trimmed it for no reason. My other thought was adding the adjustable koni yellows. Obviously this is more $, but I want to fix the problem correctly. I figured I could raise the back up slightly since they are adjustable.

Will an alignment, some toe bolts, and trimming fix these issues or will the Konis fix everything? Do I need other suspension hardware? Any input or experience is appreciated.

I don't know that koni yellow are going to help you at all.

They have no way of adjust shock length or preload?
What is the 1 inch adapter?

Fixing your negative camber would result in more rubbing no?

You need to reduce your overall suspension travel now that the car is lower.
Or adjust its distribution. So there is less bump travel and more droop travel.
I'm not sure buying koni yellow will help you in any way.

Thanks. I assumed the konis are height adjustable, unless I am understanding their adjustable function incorrectly. I figured adjusting the konis would allow me to ride a little higher or adjust the preload so it doesn't bounce low enough to rub. You are right, though, in that zeroing out my negative camber in the rear would probably make the rubbing situation worse. This is why I really need to fix both issues. The negative camber doesn't bother me as much as the rubbing. The camber looks kinda neat IMO.

The 1inch adapters are for the wheels to stick out enough for it be flush with the body. They're like hubcentric spacers.

The Koni's for are not height adjustable for the Z (at least the rears). The ones I had for my NA Miata years ago were, so I guess it's model specific.

I have the Eibach pro springs on mine. No rubbing at all and I'm using SPL camber arms with an aftermarket cam bolt to get alignment back in spec... Swift Springs must sit lower than Eibach.

Yeah, I think I misunderstood. I see that the damping settings are adjustable. That doesn't correlate to height adjustability. I feel stupid, but a lot of things are starting to make sense. I also feel like I'm kind of screwed.

Another idea I just thought of that may fix the issue is removing the 1inch adapters (which is approximately 25mm) and adding 20mm spacers. It should still be close to flush, but I think that'll fix the rubbing since it won't stick out as much. Then an alignment with some toe bolts should help compensate some of the negative camber. I hope someone can share their thoughts on this idea.

Oh the 1inch adapters are spacers! Ha I did not clue into that. That would help for sure.

You need toe bolts and camber arms for the rear. You spacers are too wide.

Thanks, Spooler. I'm starting to think my spacers may be too wide as well which is causing the issue. What exactly will the camber arms do and do shops carry toe bolts? I'm hoping a shop will be able to advise on the toe bolts once they run an alignment.

You will need at least SPC Toe bolts and SPL camber arms. Both are needed to correct the Camber on the rear. Once you get that done then you can see what spacers you need for better fitment. Do a search and you should be able to see what most folks run on the rear on stock wheels, if that is what you have.

Folks want to lower their car and have their wheels fit a certain way, let's say, aggressively

but they don't wanna do the stuff that will make all of it work


You have a spring/shock combination that is not height adjustable
You have OEM rear suspension that has limited adjustability
You didn't bother telling us your wheel specs so we can have some idea how bad the fit is

I dunno guys, we might be stuck?

:iagree:

Thanks for the details @Spooler and thanks for the confirmation @Rusty.

@OptionZero, see link below so you can see "how bad my fitment is" and specs

http://www.the370z.com/wheels-tires/...ml#post4020204

Short answer is like Spooler and Rusty pointed out, dump your bigass spacer

But since OP didn't bother telling us everything despite asking for help

Here's his wheel setup:
http://www.the370z.com/wheels-tires/...ml#post4020204

The wheels are Momo Anzio:
https://momo.com/en-us/momo-rf-serie...=M10191165P55#

The available sizes seem wildly inconsistent across websites, with Momo listing them as only available in +55, Vivid not even listing them in 5x114.3, but it looks like GYW has the chart:

https://c2.staticflickr.com/2/1786/2...f1541eeb_c.jpg

You added a 25mm spacer to a +19 offset making your effective offset -6

If this is up to date, this is your current wheel fitment:

http://www.the370z.com/attachments/w...1.12.43-pm.jpg

A few more things you left out. You still have those dumbass Nismo fender trimmings, take those off because the attachment clips are certainly rubbing, they protrude in and actually reduce fitment

Your rears should also be rolled from the factory in light of those clips

In order to clear you will probably need -2 camber, maybe more

Dumping your spacers will probably solve all of your problems

if you want to run aggressive sizes you can't be a baby