Spring rate with swift springs?

Walker16 · 08-22-2013, 09:47 PM

I'm looking at getting some BC Racing coilovers with swift springs. I have heard a few guys are going with 400 front and 800 rear. With maybe 2 or 3 track days a year would that be a good set up and still be a nice ride. I have a vehicle I use for commuting to and from work but the 335 is my daily driver besides the work commute. Thanks

CRG3 · 08-23-2013, 12:04 AM

I went with 336 FR, 672 RR along with AST 4100 coilovers - and now regret having not gone with stiffer springs......and that's even with having to spend 95% of my time on crappy bay area roads. Definitely go firmer than what I have.

HP Autosport · 08-23-2013, 12:52 PM

Really depends on personal preference. I started with 400/800. It is a good starting point and you can really dial in rebound and compression around it. Stiffer doesn't always mean faster. I would like to keep the rear rates and up the front to about 600, given that is without the use of a front sway bar. Hope that helps a little.

-Mike

08-22-2013, 09:47 PM	#1
Walker16 First Lieutenant 46 Rep 317 Posts Drives: '11 335i Join Date: Jun 2013 Location: Livermore, Ca iTrader: (4) Garage List 2011 BMW 335i [9.00] 2010 BMW 335i -RIP- [0.00]	Spring rate with swift springs? I'm looking at getting some BC Racing coilovers with swift springs. I have heard a few guys are going with 400 front and 800 rear. With maybe 2 or 3 track days a year would that be a good set up and still be a nice ride. I have a vehicle I use for commuting to and from work but the 335 is my daily driver besides the work commute. Thanks
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08-23-2013, 12:04 AM	#2
CRG3 Private First Class 12 Rep 104 Posts Drives: 2011 E92 M-Sport Join Date: Aug 2010 Location: KY iTrader: (1)	I went with 336 FR, 672 RR along with AST 4100 coilovers - and now regret having not gone with stiffer springs......and that's even with having to spend 95% of my time on crappy bay area roads. Definitely go firmer than what I have. __________________ 2011 E92 M-Sport 6 Spd Manual BSM/Black Dakota/Dark Burl Heated Seats / H&K / Sat / Ipod/USB / CA / AST 4100s / M3 Suspension Bits / 18" Forgestar F14 - Gunmetal with Michigan Super Sports / Quaife LSD, etc...etc...
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08-23-2013, 12:52 PM	#3
HP Autosport Supreme Allied Commander 4211 Rep 56,220 Posts Drives: F80 M3 Join Date: Mar 2007 Location: Santa Barbara, AP, Brembo, GIAC, Koni, Ohlins, Performance Friction, www.hpautosport.com iTrader: (36)	Really depends on personal preference. I started with 400/800. It is a good starting point and you can really dial in rebound and compression around it. Stiffer doesn't always mean faster. I would like to keep the rear rates and up the front to about 600, given that is without the use of a front sway bar. Hope that helps a little. -Mike
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