Installed IS springs in my XI

BMSe92 · 04-03-2012, 08:31 PM

Ok, so I didnt want to spend much money on suspension right now and was able to pick up a set of springs from another member that he removed from his IS to go aftermarket.

After some research, is seems that the IS springs and regular sport package springs are the same. And it's obvious that the 335i with sport package rides noticeably lower than the XI.

Long story short, I was hoping just to rid myself of the huge front wheel-to-fender gap but it doesn't seem to have lowered it any!?!?

I measured from the center of the wheel to the bottom lip of the fender, and both before and after, it was 15". (that's with stock 18" msport wheels)

AWD Addict · 04-03-2012, 11:03 PM

Strut perch is different on the xi, I believe, not just spring rate on spring.

BMSe92 · 04-04-2012, 06:59 AM

Yea but even if the perch is different, it should still lower the car some, no?

AWD Addict · 04-04-2012, 09:28 AM

Apparently not.

Doyle · 04-04-2012, 11:16 AM

AWD Addict is right: the RWD/IS "sport suspension" is a completely different suspension package. That means the springs, dampers, bars, etc are all changed. Likely the sport struts have lower spring perches in order to allow for more/better travel, rather than just shortening the spring. Likely the sport struts are shorter, as well.

04-03-2012, 08:31 PM	#1
BMSe92 Lieutenant 68 Rep 586 Posts Drives: 2017 M4 Join Date: Apr 2009 Location: North Jersey iTrader: (4) Garage List 2017 M4 [0.00]	Installed IS springs in my XI Ok, so I didnt want to spend much money on suspension right now and was able to pick up a set of springs from another member that he removed from his IS to go aftermarket. After some research, is seems that the IS springs and regular sport package springs are the same. And it's obvious that the 335i with sport package rides noticeably lower than the XI. Long story short, I was hoping just to rid myself of the huge front wheel-to-fender gap but it doesn't seem to have lowered it any!?!? I measured from the center of the wheel to the bottom lip of the fender, and both before and after, it was 15". (that's with stock 18" msport wheels) __________________ 2017 M4 /// YMB-Blk /// 20” Rohana RFX10 /// 15% Tint /// M-performance Grills /// CF M-Performance Splitters /// CF M-Performance Trunk Spoiler /// CF M-Performance Front Lip /// RW Carbon Side Skirt Exts /// RW Carbon Rear Diffuser ///Color Match Reflectors /// Keyhole Delete /// Euro Shadowline Tails /// AA MidPipe ///
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04-03-2012, 11:03 PM	#2
AWD Addict Chief Executive 390 Rep 2,919 Posts Drives: 2008 335xi 6spd Coupe Join Date: Dec 2007 Location: Boston iTrader: (1) Garage List 2008 335xi [0.00]	Strut perch is different on the xi, I believe, not just spring rate on spring.
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04-04-2012, 06:59 AM	#3
BMSe92 Lieutenant 68 Rep 586 Posts Drives: 2017 M4 Join Date: Apr 2009 Location: North Jersey iTrader: (4) Garage List 2017 M4 [0.00]	Yea but even if the perch is different, it should still lower the car some, no? __________________ 2017 M4 /// YMB-Blk /// 20” Rohana RFX10 /// 15% Tint /// M-performance Grills /// CF M-Performance Splitters /// CF M-Performance Trunk Spoiler /// CF M-Performance Front Lip /// RW Carbon Side Skirt Exts /// RW Carbon Rear Diffuser ///Color Match Reflectors /// Keyhole Delete /// Euro Shadowline Tails /// AA MidPipe ///
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04-04-2012, 09:28 AM	#4
AWD Addict Chief Executive 390 Rep 2,919 Posts Drives: 2008 335xi 6spd Coupe Join Date: Dec 2007 Location: Boston iTrader: (1) Garage List 2008 335xi [0.00]	Apparently not.
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04-04-2012, 11:16 AM	#5
Doyle Hellafunctional 37 Rep 426 Posts Drives: 335xi Join Date: Nov 2010 Location: N/A iTrader: (2)	AWD Addict is right: the RWD/IS "sport suspension" is a completely different suspension package. That means the springs, dampers, bars, etc are all changed. Likely the sport struts have lower spring perches in order to allow for more/better travel, rather than just shortening the spring. Likely the sport struts are shorter, as well. __________________ Go: Cobb S2+, Big Tom FMIC, CP-E DP & DCI, Royal Muffler, AR OC Turn: TC Kline/Swift SA, Vorshlag Plates, UUC Front Bar, H&R M3 Rear Bar, VAC endlinks & spacers, Forgeline 18x9.5/NT05 265 Square Stop: Endless MX72, Stoptech Rotors/Lines, Motul RBF600
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