Quote:
Originally Posted by GaryS
Oh, okay. I guess you saw the answers that HP Autowerks and Orb gave to a similar question earlier in this thread. In any case, that's the main reason why I chose BMW Performance springs. I couldn't find enough information to have confidence that any other aftermarket brand was trying to achieve what I wanted and knew how to achieve it.
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I read what Orb wrote about susp frequencies, motion ratio and wheel rates. That lead to my question why tuners aren't tripling the rear spring rate from the front. Haven't seen anything from a susp tuner or vendor on this.
I've also considered the BMW PS springs to maintain BMW engineered motion ratio; just couldn't get their rear bumpstops seperate from the kit, so I'm still 'rolling' on the zsp springs as opposed to increasing spring rates which aren't congruent with the way the car was engineered..
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2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, Koni/M3 susp, Apex Arc 8, Mich PSS