I have recently purchased a used set of PSS9's for my machine.

I would like to know what the minimum required additional suspension parts to lower this car properly for proper tire wear?

I have already recieved good advice, but that was for a maximum extraction of performance from this coilovers set up.

I want a nice look and improved handling, but I am not tracking my car to shave off every milliseconds.
I currently have H&R front & rear adjustable sway bars if that means anything to the advice given.

I am looking for a nice well rounded, balanced machine and not a all out race car. The mods I have done so far is an indicator of a balance of a Porsche that I am trying to obtain. I have had this set of coilover sitting in my garage for a week now and don't want it to be sitting for a couple more months as I set aside a budget for all that was recommended so far.

What would be the minimum required so I can lower this machine with these coilovers about 1.25 - 1.5" or at least to GT2 height.


Thanks

Bobby Ali

ba

 

Hey BA,
I bought my pss9 and TRG drop-links then had car corner balanced and aligned. I drove like that for a few years but then needed a more aggressive track alignment to get even wear on tires so had GT3 lower control arms installed that allowed more neg camber ~2.8 right now and 2.5 for the back. My ride is pretty low ~26"
and shocks set at 4 front 4 back. Pretty happy with this for street and track. Tires also make a BIG difference. Enjoy!

 

If you have no plans to track the car PPS9 are a good choice (although not a giant step up from H&Rs). Depending on how much you lower it (GT2 ride height for instance), your wheel width, offset, and tire size, you may end up with too much negative rear camber and/or toe in resulting in excessive inner tire wear for street use. The stock eccentrics do not have enough adjustment to compensate. The generally suggested solution are adjustable rear upper control arms (dog bones) and rear adjustable toe link. You may also need rear drop links as they may be too short (Bilstein provides long front drop links). A downsides of this solution is adjustable drops links tend to be a bit noisy.

 

drop links

 

I think you'll be fine with just getting a set of rear adjustable control arms to adjust for too much negative camber.

 

I bought a used set last year. Before I put them on, I sent them to Bilstein in SoCal and had them redone. I think it was $125 per shock. Money well spent as the the internal valving was worn and they were not operating within acceptable parameters. They were as good as new when I got them back.

 

Bilstein and Koni are both great about doing custom work and rebuilds on their products.