Quote:
Originally Posted by Poohhbear9044
On very smooth roads the Teins were fantastic but here in the UK smooth roads are very rare so I always felt I was one step away from losing my teeth.
The Eibachs however are much more compliant initially, so soak up the bumps nicely but due to their progressive nature stiffen up when loaded in the corners. I prefer the Eibachs for that reason.
Bob
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I know this is old, but I wanted to say something on this.
Tein S-Techs are progressive rate springs, as is the Pro-Kit. In fact, all aftermarket Lowering Springs are progressive. If you want Liner Rate, spring with OEM springs or go with Coilovers.
Anyways, the S-Techs have a much softer initial rate, so they'll compress more before they hit the stiffer part of the progressive rate when you go over bumps and such. It can lead to more of a "shock," as the springs compress up more due to the softer intial rate and then hit the stiffer part and bam, you get that bone jarring feel.
The Pro-Kit is stiffer with a stiffer initial rate, which gives it more compliance on the road, as every little bump doesn't compress the heck out of the shock every time you go over a bump or un-even road. The stiffer initial rates are the reason the Pro-Kit and TRD ride more compliant initially. The S-Techs are harsher intially due to the fact they have too soft of a progressive spring rate, especially for that low of a drop. The result is a spring that compresses too much every time you go over a minor bump, because the softer initial rates can't prevent it from doing so.