OEM Spring Rates For Various F30's? - BMW 3-Series Forum (F30 / F32)

JMK007 · 02-06-2013, 11:34 AM

Does anyone know what the OEM spring rates are for any of the F30s? I'm sure the rates vary depending upon whether you have a 328 v. 335 and whether you have sport line (or M-Performanc) v. luxury...etc. This information would be helpful on a variety of fronts, including for those interested in aftermarket springs or coilover set ups who want to compare them to the oem springs rates.

TT6mT · 02-11-2013, 04:58 PM

JMK007- Did you find out yet? I've been searching for the spring rate on the 2013 f30 335i m sport suspension. I agree, this is important information to know before changing out anything.

JMK007 · 02-11-2013, 06:25 PM

I have no information yet...

TT6mT · 02-13-2013, 02:48 PM

Thanks, I've still been looking. I found E90 specs, but going by the aftermarket specs, it's stiffer than F30's.

If I read correctly the BC coilovers for the F30 is 6kg front, 12kg rear. It seems really soft for the front and stiff for the rear.

02-06-2013, 11:34 AM	#1
JMK007 Enlisted Member Drives: 328i Sport Line, 6MT, RWD Join Date: Jan 2013 Location: Chicago, IL. Posts: 48 iTrader: (0)	OEM Spring Rates For Various F30's? Does anyone know what the OEM spring rates are for any of the F30s? I'm sure the rates vary depending upon whether you have a 328 v. 335 and whether you have sport line (or M-Performanc) v. luxury...etc. This information would be helpful on a variety of fronts, including for those interested in aftermarket springs or coilover set ups who want to compare them to the oem springs rates. __________________ SCCA & Midwestern Council W2W, '91 Spec Miata, '07 NASA TTD Champion, Midwest, '99 M3, '09 Midwstrn Council TT Champion, BS, '10 GTI, '10 &'11
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02-11-2013, 06:25 PM	#3
JMK007 Enlisted Member Drives: 328i Sport Line, 6MT, RWD Join Date: Jan 2013 Location: Chicago, IL. Posts: 48 iTrader: (0)	I have no information yet... __________________ SCCA & Midwestern Council W2W, '91 Spec Miata, '07 NASA TTD Champion, Midwest, '99 M3, '09 Midwstrn Council TT Champion, BS, '10 GTI, '10 &'11

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02-11-2013, 04:58 PM	#2
TT6mT New Member Drives: 2013 AW F30 M Sportline 6mt Join Date: Feb 2013 Location: Bay Area!! Posts: 28 iTrader: (0) Garage List 2008 Infiniti G37S ... [0.00] 2013 BMW 335i M Spo ... [0.00]	JMK007- Did you find out yet? I've been searching for the spring rate on the 2013 f30 335i m sport suspension. I agree, this is important information to know before changing out anything.

02-13-2013, 02:48 PM	#4
TT6mT New Member Drives: 2013 AW F30 M Sportline 6mt Join Date: Feb 2013 Location: Bay Area!! Posts: 28 iTrader: (0) Garage List 2008 Infiniti G37S ... [0.00] 2013 BMW 335i M Spo ... [0.00]	Thanks, I've still been looking. I found E90 specs, but going by the aftermarket specs, it's stiffer than F30's. If I read correctly the BC coilovers for the F30 is 6kg front, 12kg rear. It seems really soft for the front and stiff for the rear.