High Mileage E91 with ZSP

minaret · 04-03-2015, 04:27 PM

My DD E91 RWD has 181,000 miles. The factory sport suspension feels pretty soft now. I do 1 or 2 HPDE a year and my other DD is a Dodge Diesel 4x4 pickup. Is it a given I'll need replacement springs and bushings besides shocks? Prefer the drop of the factory ZSP springs. and firm ride when it was new. I've read dozens of threads favoring Koni Sports or Bilstein B6; no coil overs. Recommended springs and bushings?

ellinara · 04-03-2015, 05:20 PM

On my xi I went with Bilstein B6, and the same as one of my shocks broke. The difference is huge. I am taking corners about 10-20km/hr faster than before. I decided not to change the springs because

1) Wanted to avoid issues of xi.
2) Springs were not broken.
3) Wanted to see handling difference before and after on just shocks.

Hope this helps.

04-03-2015, 04:27 PM	#1
minaret Private First Class 57 Rep 114 Posts Drives: 2008 E91 ZSP Join Date: Apr 2007 Location: Hi Desert, Ca iTrader: (0) Garage List 2008 328i Sport Wagon [0.00]	High Mileage E91 with ZSP My DD E91 RWD has 181,000 miles. The factory sport suspension feels pretty soft now. I do 1 or 2 HPDE a year and my other DD is a Dodge Diesel 4x4 pickup. Is it a given I'll need replacement springs and bushings besides shocks? Prefer the drop of the factory ZSP springs. and firm ride when it was new. I've read dozens of threads favoring Koni Sports or Bilstein B6; no coil overs. Recommended springs and bushings? __________________ 2008 E91, ARC-8, 255/40/17 NT01, ER sport cooler, TCK camber plates, coil-overs 400# front 700# rear, Koni SA shocks. M3 Subframe bushings, front + rear control arms, tension struts, strut brace. Quaife, Carbotech, Schroth. Last edited by minaret; 04-03-2015 at 04:31 PM.. Reason: Typo shock choice
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04-03-2015, 05:20 PM	#2
ellinara Enlisted Member 11 Rep 41 Posts Drives: 08 E92 335i/08 R56 Cooper S Join Date: Apr 2012 Location: Toronto, Ontario iTrader: (0)	On my xi I went with Bilstein B6, and the same as one of my shocks broke. The difference is huge. I am taking corners about 10-20km/hr faster than before. I decided not to change the springs because 1) Wanted to avoid issues of xi. 2) Springs were not broken. 3) Wanted to see handling difference before and after on just shocks. Hope this helps. __________________ 94 BMW E36 320iA RIP 07 BMW E92 328xi RIP 08 BMW E92 335i 08 MINI R56 Cooper S
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