5 bad suspension mods

Bmw doubles · 04-13-2016, 05:05 PM

Haha, I'm guilty of the springs or was.

"Why it's a dumb idea for safety reasons"

siliconvalleyf06 · 04-13-2016, 05:25 PM

Quote:

Originally Posted by Bmw doubles

Haha, I'm guilty of the springs or was.

"Why it's a dumb idea for safety reasons"

Ok, so I have just added ACS springs to my 2014 535i MSport with M5 competition front sway bar, 650i rear sway bar, and 12mm/15mm BMS wheel spacers. Does this mean I completed killed my suspension? Thoughts anyone?

Bmw doubles · 04-13-2016, 06:41 PM

Quote:

Originally Posted by SiliconValleyF10

Quote:

Originally Posted by Bmw doubles

Haha, I'm guilty of the springs or was.

"Why it's a dumb idea for safety reasons"

Ok, so I have just added ACS springs to my 2014 535i MSport with M5 competition front sway bar, 650i rear sway bar, and 12mm/15mm BMS wheel spacers. Does this mean I completed killed my suspension? Thoughts anyone?

Not if you get the shocks. The wheel spacers have a small effect even at 1" spacers. Springs require matching shocks for sure.

PJinCA · 04-13-2016, 08:43 PM

I can agree with the sway bar talk. When I raced my Honda Accord in the SCCA I actually went with a smaller front sway bar, larger rear one and coilovers with a stiffer rear spring. The end result was very neutral handling.
Cutting springs is useless and dangerous on anything other than a 70s boulevard cruiser.
I have never used spacers, so I couldn't comment on how they feel. I usually get wheels with an aggressive offset and that settles that.
If you're going to lower the car and get 20" or larger wheels on our cars, I would definitely get the rear camber adjusted during an alignment to be as close to 0 as possible. When my 530 had coilovers rear tires would last me about 10k miles, that gets expensive with 20s. So I went to a shop (dealer will NOT take out camber), and they got the rear camber reduced from -2.0 degrees (BMW spec), to -0.8 degrees. The result? I managed to get 30k miles from the next set of tires

Bmw doubles · 04-13-2016, 09:40 PM

Quote:

Originally Posted by PJinCA

I can agree with the sway bar talk. When I raced my Honda Accord in the SCCA I actually went with a smaller front sway bar, larger rear one and coilovers with a stiffer rear spring. The end result was very neutral handling.
Cutting springs is useless and dangerous on anything other than a 70s boulevard cruiser.
I have never used spacers, so I couldn't comment on how they feel. I usually get wheels with an aggressive offset and that settles that.
If you're going to lower the car and get 20" or larger wheels on our cars, I would definitely get the rear camber adjusted during an alignment to be as close to 0 as possible. When my 530 had coilovers rear tires would last me about 10k miles, that gets expensive with 20s. So I went to a shop (dealer will NOT take out camber), and they got the rear camber reduced from -2.0 degrees (BMW spec), to -0.8 degrees. The result? I managed to get 30k miles from the next set of tires

Yup, negative camber correction time. I'm going to west end alignment next now that I have the shocks and springs in.

lsturbointeg · 04-13-2016, 10:51 PM

This guy could bankrupt spring companies lol

04-13-2016, 05:05 PM	#1
Bmw doubles Dream crusher 984 Rep 2,421 Posts Drives: Fast Join Date: Mar 2015 Location: westside iTrader: (0) Garage List 2011 535 [0.00]	5 bad suspension mods Haha, I'm guilty of the springs or was. "Why it's a dumb idea for safety reasons" __________________ 535i MIssion Performance, PS2, Helix HPFP Kit, Wagner FMIC, Spec 3 clutch, Steel SMF, Wolf Racing CP, UUC SSK, GFB dv, SprintBooster, Custom Dynomax Exhaust, M5 Sways, Eibach OE Springs, Koni Sports Adjustable, Custom Short Ram CAI IG: @bmwdoubles
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04-13-2016, 08:43 PM	#4
PJinCA USAF Pararescue Veteran 332 Rep 770 Posts Drives: F10 535 Join Date: Feb 2013 Location: SoCal iTrader: (0)	I can agree with the sway bar talk. When I raced my Honda Accord in the SCCA I actually went with a smaller front sway bar, larger rear one and coilovers with a stiffer rear spring. The end result was very neutral handling. Cutting springs is useless and dangerous on anything other than a 70s boulevard cruiser. I have never used spacers, so I couldn't comment on how they feel. I usually get wheels with an aggressive offset and that settles that. If you're going to lower the car and get 20" or larger wheels on our cars, I would definitely get the rear camber adjusted during an alignment to be as close to 0 as possible. When my 530 had coilovers rear tires would last me about 10k miles, that gets expensive with 20s. So I went to a shop (dealer will NOT take out camber), and they got the rear camber reduced from -2.0 degrees (BMW spec), to -0.8 degrees. The result? I managed to get 30k miles from the next set of tires
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04-13-2016, 10:51 PM	#6
lsturbointeg Lieutenant General 9153 Rep 14,522 Posts Drives: 2011 535i Jet Black Join Date: Aug 2014 Location: Asian lost in OH iTrader: (0)	This guy could bankrupt spring companies lol __________________ ~F90Conversion~21"3Piece Forged AvantGardeWheels~KWV1Coilovers~CQUENCE slotted/drilled rotors~GoodridgeStainlesslines~MeisterschaftQuadEx haust~Akrapovic 4"tips~VRSF DP~VRSF CP~TurboSmart BOV~K&N filter~CarbonFiberExteriorComponents~GladenAlphaCo mponents~MatchUp7BMW~Punch P300-12T~ Follow me on Instagram: lsturbointeg
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