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12-26-2012, 04:26 AM | #23 | |
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So you are recommending a F/R 500/1200 lbf/in setup for a R spring mounted in the stock location (i.e., control arm mounted)? I do not know of a single person running that spring combo on a street or dual-purpose setup using Motons, Ohlins, JRZ, AST, or MCS dampers - are you running, or did someone recommend, this spring rate combo? I'm currently running F/R 500/800 on JRZ dampers, and previously 600/800 on Moton dampers, R springs mounted in the stock location for both setups. Last edited by M3SQRD; 12-26-2012 at 04:36 AM.. |
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12-26-2012, 10:45 AM | #24 |
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if the car is gonna be used mainly for street, im running the JRZ RS dampers with 450/650 F/R swift springs, i love the way my car rides and handles.... but with occasional track days, you should run a little stiffer springs, like maybe 650/850 F/R...
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12-26-2012, 12:50 PM | #25 |
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I would recommend to use Motion Control as we have had experience with Ohlins and JRZ suspensions on our race car and customer cars. MCS also has just released their new non remote reservoir single adjustable coilover.
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12-27-2012, 07:05 PM | #27 | |
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Although the above calculates a rear spring at a little over 400lb, it is actually around 500lb (600*0.83 = 498lb) This would complement the front 500lb nicely. Sway bars then can provide more "spring" when you need it (cornering that is)
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12-27-2012, 08:20 PM | #28 | |
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Wheel rate = spring rate * motion ratio^2 so for your example... 600*0.83^2 = 413 lbf/in Good luck finding any reputable shop/vendor that builds/races e9x M3s that would recommend running F/R 500/1200 lbf/in spring rates with the rear spring in the stock location |
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12-27-2012, 08:43 PM | #29 | |
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12-27-2012, 09:01 PM | #30 | |
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I would think having a 1:1 effective spring rates on the front and the back would be really stiff in the rear.
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12-27-2012, 09:22 PM | #31 |
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Good point there. How much "offset" in spring rate would the rear require compared to the front? I ask because I used to run a 1:1 on my Evo IX (12kg springs in front and 16kg in rear to match motion ratio) and the car handled like it was on rails. Was it stiff? You bet...
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12-28-2012, 04:31 AM | #32 | |
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12-28-2012, 02:09 PM | #33 | ||
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03-18-2013, 06:10 AM | #34 |
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I'm planing to pick up a set of Nitron R3's for my GT3 from my boys here in Taiwan German Motorsports.
they seem to have very good quality i've seen these in person. should be a great choice for M3's
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08-15-2013, 06:31 PM | #35 | |
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Was wondering what kit you would suggest for my 2008 E92 M3...I want a lower stance and I autoctoss is a few times a year...but 90% of my driving is city and highway. Can you quote me a price for here in Canada. Cheers mate derrick |
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