Higher rate springs on KW Clubsport?

RADRACR · 04-11-2015, 11:02 AM

According to this blog, the stock springs are too soft and he replaced with higher rate springs, linear front and rear, and removed the helper spring.

Can I get insight into what type of springs I'm looking for and where to shop? The fronts seem straight forward but the rears are that progressive "barrel" type.

Also, can I get insight into appropriate rates for our cars (for track)?

Thanks!

GP20 · 04-11-2015, 01:29 PM

Not familiar with the KW clubsport kit at all. But the Swift springs seem like a popular choice when people are swapping out their springs. I actually liked the TCKline rear springs and ran those with my GC coilovers for a while.

inTgr8r · 04-11-2015, 03:04 PM

Here's another thread about converting springs http://www.zpost.com/forums/showthread.php?t=689128.

Beedub · 04-12-2015, 11:57 AM

maybe its the z4 platform but the supplied springs feel god damn stiff already to me, i like the slightly softer linear spring and using the valving to stiffen things up further, thats exactly how TCK will advise you to go..... i have never felt the need to go stiffer tbh and my car is giving some excellent times at the track in the past season, however KW have told me int he past the damper units can support upto 700nm should you wish to go stiffer.

Finnegan · 04-13-2015, 01:12 AM

Have you already installed and find the rates too low?

Maybe try "as is" for a track day and test?

04-11-2015, 11:02 AM	#1
RADRACR Captain 84 Rep 924 Posts Drives: '08 Z4 M Coupé // '09 X5 d Join Date: Apr 2010 Location: Sioux Falls, South Dakota iTrader: (2)	Higher rate springs on KW Clubsport? According to this blog, the stock springs are too soft and he replaced with higher rate springs, linear front and rear, and removed the helper spring. Can I get insight into what type of springs I'm looking for and where to shop? The fronts seem straight forward but the rears are that progressive "barrel" type. Also, can I get insight into appropriate rates for our cars (for track)? Thanks! __________________ '08 Z4 ///M Coupé (#1765/1815) — 1 of 68 Sepang Bronze / Black Nappa / Madeira Wood / 1 of 1 this combo 19" Advan RS / AP Racing / Bridgestone RE-11 / Autosolutions SSK / R.E. Diablo / R.E. trans mounts '09 X5 35d — Space Grey / Saddle Brown 20" Forgestar F14 / SCR Delete
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04-11-2015, 01:29 PM	#2
GP20 Major 95 Rep 1,269 Posts Drives: Z4M, F80 M3, 991.2 GTS Join Date: Jan 2007 Location: Canada iTrader: (5)	Not familiar with the KW clubsport kit at all. But the Swift springs seem like a popular choice when people are swapping out their springs. I actually liked the TCKline rear springs and ran those with my GC coilovers for a while.
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04-11-2015, 03:04 PM	#3
inTgr8r Lieutenant General 2426 Rep 11,667 Posts Drives: M2 Comp Join Date: Mar 2006 Location: Toronto iTrader: (10)	Here's another thread about converting springs http://www.zpost.com/forums/showthread.php?t=689128. __________________ '21 M2C Hockenheim Silver '18 718 Cayman S Lava Orange (sold) '13 E92 M3 Santorini Blue (sold) '07 Z4 M Coupe Alpine White (sold)
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04-12-2015, 11:57 AM	#4
Beedub Major General 423 Rep 5,327 Posts Drives: 2007 Z4 M roadster vt2-500 Join Date: Sep 2007 Location: UK iTrader: (0)	maybe its the z4 platform but the supplied springs feel god damn stiff already to me, i like the slightly softer linear spring and using the valving to stiffen things up further, thats exactly how TCK will advise you to go..... i have never felt the need to go stiffer tbh and my car is giving some excellent times at the track in the past season, however KW have told me int he past the damper units can support upto 700nm should you wish to go stiffer. __________________ Z4MR VT2 - Clubsport build. Multi award winning Detailing \| Wrap \| PPF specialists UK based - www.topwrapz.com
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04-13-2015, 01:12 AM	#5
Finnegan Dog Listener 701 Rep 7,850 Posts Drives: Z4M/. Z3M, E36/46 M3 Join Date: Oct 2008 Location: Teaching the dog to slalom iTrader: (22)	Have you already installed and find the rates too low? Maybe try "as is" for a track day and test?
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