Horrible ride quality and can't figure out why

Spooler

Where do you live on the east coast. Maybe someone could recommend a shop. You really need to have the car corner balanced to get the most out of your new suspension.

Spooler

As far as why other people never have issues? I have no idea. Maybe they are not in tune with what their car does. Some folks just can't tell they have an issue. If you are all the way down in Miami, that is a long *** trip of 9hrs. If you are in Jacksonville, it is 3hrs to me.

Spooler

It takes time and patience to get a car with coilovers setup properly. It's not cheap either.

Rusty

You don't want to mess with adjusting the traction arms unless you want to change the rear geometry angles. If you don't know what you are doing, you just opened up a can of worms. Alignment shops have no clue about them. People replace the traction arms because they want to get rid of the rubber bushings.

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Ralphatron

yea I had a feeling that was the case, thanks for confirming.

I feel lost at this point. I either dump close to another grand on control arms, proper spc toe bolt installation, and alignment, hoping the end result is what I've been spending months trying to figure out, or going back to stock ride height and struts.

I'm still super surprised that every single lowered z has this issue and either doesn't know about it or spends thousands on tuning it properly. There's gotta be a way around it. I'm about to go raise it until the camber is at least in range but with my luck I'll be back at stock ride height

Spooler

Comparing my factory Nismo suspension to the one I have now is night and day difference. I wish I would have spent more money on the dampers to make it even better. Overall, I am very happy with it.

Spooler

Here is my old thread.

It's about time, gutting the Nismo suspension.

Ralphatron

See, hearing that your setup is actually better than the nismo suspension gives me hope. I need that in my life.

I also see that you're an SPL whore so it makes a lot of sense why your ride is fantastic lol

That being said, to balance cost and effort in fixing my issues, I'm now leaning on going back to the true rear kit, SPL fucas, SPL camber arms, and SPL toe arms since the SPL mid links cost more than the entire coilover kit itself. The Z1 street edition cambers arms I have right now are literally pure garbage and I'm surprised they're even selling those creaky attic sounding pieces of ****. Can't wait to take them off.

Now to figure out where to get all this stuff at a good price lol.

Thanks for pointing me to your build thread, I'm looking forward to reading the whole thing.

Spooler

What rear springs do you have on your truetype coilovers. They need to be much less. 5-6k springs.

OptionZero

I dunno how many times i gotta tell people not to get Z1 and to get the ******* SPLs

do it right the first time or don't do it

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OptionZero Build Thread

Ralphatron

I've got 5k swifts on the true rear kit. I'm fully aware of how the wheel rate is about .5 to 1 on a Z and the oem springs are basically double the rate for the same feel as a true rear strut spring.



yeah, I was hoping to hear something like this. the front and rear toe is in range of manufacturers specs, and camber is only off by tenths of a degree which makes it hard to believe just that alone would cause so much instability over regular street imperfections. I'm just not experienced enough to be confident that its just the alignment at fault here. But, then I'm also not sure if you guys that are running the aragostas (which are almost 3 times the price) is the reason you aren't complaining about ride quality. But BC is super popular in the community so I also can't imagine they are the reason either.

I'm running stock tires all around. Got the car brand new back in June and I still only have 3k miles on it lol. BUT..... since I spent a ton of time trying to settle on a setup I liked, I drove around without an alignment enough to chew my tread down pretttttty bad. I know I know, but in a way I'm almost glad I'll be able to get rid of these crap tires soon. Here's the current status:

Stock Bridgestone Potenzas
Front: 245/40/19 @ 40-50% tread and 32psi
Rear: 275/35/19 @ 10-15% tread and 34psi


EDIT: yes, as Spooler pointed out, the instability im talking about is mostly darting and tramlining where the car kind of jolts to the side following a weird bump in the road or going over painted lettering that's slightly raised on the road will even cause me to grip the wheel hard to maintain a straight drive which blows my mind. I may actually go snap some pics of some bumps I know cause this pretty badly to give you guys an idea of what I mean. This is all at normal driving speeds too, nothing crazy.

yup, fully aware of this. My oem kit I currently have on is at 8k that came with the bc kit, and the true rear kit I had before this was using a 5k swift.

I'll admit I was in a rush to get something to allow me to align the car (its my dd) and couldn't really understand just by quickly skimming the descriptions, photos, and feedback why there would actually be a difference. Clearly I was wrong. Lesson learned.

OptionZero

I think you learned a lesson or two about suspension components, but haven't we identified the problem right here?

Dead tires are going to have a MUCH greater affect than one degree or less of camber of fractions of a degree in toe

aint no coilovers, arms, or alignment thats gonna affect your car more than not having tread

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OptionZero Build Thread

OptionZero

There was a black Friday sale when SPL had all their stuff on sale. I posted about it. This is what happens when people don't listen to me

Contact some of the vendors here. I used ImportPartsPro, they had the best price

https://www.importpartspro.com/

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OptionZero Build Thread

Spooler

If have 2 weeks straight to read you can look into my other one.

Fast Intentions Stage 2 TT build by MA-Motorsports.

Spooler

Thread on True-Type coilovers.

Aero and Suspension Tuning With True Type Coilovers