Quote:
Originally Posted by socalengineer
The Billstein Pro Kit actually comes with Eibach springs. But the dampening will definitely be stronger because I believe it is the B8 strut.
I'm against just putting springs on the car because:
1) The dampening and spring rate need to be tuned for each car. Just upgrading the springs modifies this symbiosis leading to sub-par ride quality.
2) It puts extra stress on the strut because the strut was designed for a longer resting position.
3) It's not THAT much more expensive for the shocks + springs. Granted shocks are the majority of the cost.
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You are over thinking things.
1. The stock shocks are adjustable via mode and the Eibachs are progressive springs just like stock, just one inch shorter. The rates change slightly in the coil.
2. The suspension is designed to travel several inches, and perform across various occupant weights. If you think a resting height of an inch lower is different stress on the suspension than having 3 passengers, think about things more from an engineering stand point. If you add aprox. 600 lbs the ride will be lower. The suspension is designed for that.
The question is what the castor and camber will be at the lower height. And i can assure you that a one inch drop is still able to be aligned to factory specs.
3. Eibach springs are about $250 US from the factory. Using aftermarket shocks means you lose the adaptive suspension settings.
Normaly i would agree with your points, as i have lowered and modified many cars, but in this case, unless you want to go coilovers, just swapping springs is the way to go.