Ricky

I've been debating for months to lower the car, but the main problem I'm faced with is does lowering the car put more stress onto the shocks, or any other part of the suspension? I'm planning to lower it with Eibach's, which is 1.0 rear, .8 front. I don't want to get them then one day come to find out I blew my shocks out because of it. Anyone have any input?

Audito350Z

iTrader: (1)

On my Audi A4, I put lwoering springs with the OEM shocks at about 2500 miles. The car started out with the Sports package, which is a little lower than non-Sport and has different shocks.

The new shock (Audi's Eurosport springs, which are really the Eibach Pro-Kit) lowered the car 20mm from where it was to begin with.

The OEM shocks lasted about 6500 miles before they were worn out from being too compressed all the time. I replaced them with Bilstien's and never had to worry after that.

So... on the Z I would guess you can get 8k to 10k miles before you need to replcace the shocks.

PeteH

350zroadster

iTrader: (1)

well if it does ruin the shocks, that'll be a good excuse to get NISMO coilovers

I doubt anyone had their eibachi's long enough to have opinion on that matter though

Gsedan35

iTrader: (10)

The reason for stock sturts running the risk of premature wear or blowing quickly on lowered cars is because of how most all lowering springs are stiffer. This is what causes the wear factory. Another thing come up and that's also related to not enough strut power. You can have situation's where the stock struts lack the power to prevent bottoming out, which can also damage a strut if it happens repeatedly.

BUT! (the following concerns Eibach brand springs ONLY)

What happens when the lowering springs aren't any stiffer? What happens when your lowering springs actually have a softer initial progressive spring rate. That's the case with the Eibach's on the Z. The Eibach's peak spring rates are only a fraction different than the stock spring rates. For a certain part of the suspension travel the strut will be actually controlling a softer than stock spring rate. So in this case, the only thing I'd worry about is maybe bottoming out. Which isn't something I've ever seen a Eibach owner comment or complain about.

jckolnturn

iTrader: (1)

There are camber and alignment issues you should look into as well.

MY350Z.COM

iTrader: (2)

NISMO doesn't make coilovers.

j's350z

I have about 15,000 miles on my Eibachs and stock shocks with no problems. When they do go hopefully koni's will be out.

Apexi350z

iTrader: (3)

me too, I have 6000miles on my Eibach Pro-Kit with stock shocks, they are working fine...

I just recently installed the LSDUnique camber kit for the rear, it helps alot on the camber problem after the pro-kit drop..