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BMW 3-Series (E90 E92) Forum
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Swift Sport Springs!
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09-06-2013, 03:56 AM | #89 |
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M3 subframe bushings. I'd leave the sway bars alone
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2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, Koni/M3 susp, Apex Arc 8, Mich PSS |
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09-09-2013, 06:22 PM | #90 |
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will the swift r spec drop so low that it looks slammed? Currently have sport suspension.
planning on changing bump stops. m3 rear bushings I am torn on due to the big install hit. |
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09-09-2013, 06:54 PM | #92 | |
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335i lowering: 1" in the front and 0.8" in the rear. Spring rates: -4kg/mm or 223 lb/in in the front -11kg/mm or 615 lb/in in the rear |
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09-10-2013, 12:18 PM | #93 |
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09-10-2013, 12:41 PM | #94 |
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10-03-2013, 04:07 PM | #96 |
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05-07-2014, 09:26 AM | #97 |
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05-07-2014, 11:19 AM | #98 |
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05-07-2014, 11:45 AM | #99 |
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Is it safe to say that a progressive spring like Eibach Pk's will "sag" and be "softer" overtime beacuse of its progressive nature as opposed to a linear spring like Swift Spec R's? I am having some wheel fender clearance issues and my thought process is if I swap from Eibachs to Spec R's I can regain some additional ride height and alleveiate my rubbing issues. Swift does market their spring as having a 1.0"/0.8" lowering height front to rear on the 335i vs. Eibachs 1.4"/1.0".
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05-07-2014, 12:03 PM | #100 | |
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Check out this thread. Eibach reps join the thread to answer questions and I asked them about progressive or linear. Posts 11 and 12. http://www.e90post.com/forums/showthread.php?t=959982 Before this thread, I called them on the phone, got the same answer: LINEAR. Still, for some reason I didn't believe it D's Bimmer also confirmed this with respect to pro-kit springs used with the Bilstein B12 kit. |
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05-07-2014, 12:26 PM | #101 | |
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if it's in the rear, you could gain ride height with ride height adjusters and 60mm or 2.5 id rear springs, your choice of spring weight. I'm pursuing something similar in order to increase spring rate and maintain ZSP rear height. for the front, some increase negative camber to work around it. also for the front, I've looked at but haven't tried BMW performance springs. They might provide a little less drop, are linear, and you can buy them individually. |
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05-07-2014, 01:11 PM | #102 | |
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05-07-2014, 01:29 PM | #103 | |
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The ride height adjuster I chose is also used in the same vendor's coilover kit, I just bought it separately. I'm ZSP now on heavier duty dampers (BMW PS V1), and I want to increase my spring rate in the back, without lowering. So, I bought ride height adjusters and linear #500 lb springs. Have not installed them yet, maybe in a week or two. I did get some consultation from the vendor on what length to choose and how I might set the ride height adjusters. I'm thinking too though, if you're happy with your springs, would it be easier to fender roll? Idk I haven't tried that but some folks seem to go after that like it's no big deal(?) |
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05-07-2014, 11:35 PM | #104 | |
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