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06-06-2012, 08:56 AM | #1 |
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Post your springs marking here please
I am trying to understand how different are the springs + shocks of M3 E90 92 93 and 1M
The E92 M3 has generally X1 or X2 springs that are quite low rate. Recently purchased a full E90 M3 suspension, springs are front Y4 and rear Y1, both have 1mm thicker wire than the E92. So my first conclusion is that the E90 has firmer springs and firmer dampers than the E92. Could everyone post here the marking on the spring and type of car (E90 E92 1M EDC non EDC, ZCP, Japan etc...) This could help me and others understanding.... |
06-06-2012, 12:22 PM | #2 |
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Probably very closely related to what the options on the car were, so you need that info too. On E46's, transmission choice, folding seats, and even which stereo influenced which spring paint marks the cars had.
My 2008 E90 M3 has X1 front springs, I will look at the rears when I get a chance. The only factory options were 19" wheels, cold weather, and premium packages. A car equipped with the sunroof, DCT, and tech package would weigh in excess of 90lbs more than my car, so I think it's safe to assume it would have different spring codes.
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06-06-2012, 02:05 PM | #3 |
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Mine is X7 front, X4 rear.
E92 2011 DCT ZCP iDrive, Nav, iPod, Apps DAB Electric + heated seats Electric folding mirrors Heated washer jets and wing mirrors No sunroof, no power-shades, no upgraded HiFi, no digital TV Tuner, no comfort access. Last edited by mlhj83; 06-07-2012 at 06:31 AM.. |
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06-07-2012, 03:04 AM | #4 |
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Yes I know that options will influence the weight thus the spring rate.
Normally for one type of car, lets say the E90 + E92 M3 the letter should be the same, but the number changes. For light (no options) E92 m3 it is front X1 rear X1 or X2 As posted a full option M3 E92 has X4 up to X7 What makes me strange is that the springs I got from ebay from en E90 M3 have the marking Y4 in front and Y2 in rear. Changing from X to Y letter, the thickness is 1mm extra for the Y !! This makes the springs a lot more stiff, no sense for an E90!? Maybe the ebay dude has taken the springs from an E93 M3? and don't want to admit it? But the shocks that where bundled with these springs are indeed from E90 M3 (checked on realoem.com) Any marking for E93 please? |
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06-07-2012, 06:35 AM | #5 | |
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06-10-2012, 05:58 AM | #7 |
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My rears are X2's, by the way. So far we have these confirmed, I'll try to update this as more people post.
Confirmed E9x M3 Spring Codes USA 2008 E90 6-speed, ZPP and ZCW: X1 Front, X2 Rear UK 2011 E92 ZCP, DCT, nav: X7 Front, X4 Rear USA 2011 E92 ZCP 6-speed, tech: X3 Front, X5 rear USA 2011 1-series M Coupe: Y8 Front, Y8 Rear
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Last edited by Richbot; 06-14-2012 at 08:52 AM.. |
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06-12-2012, 02:51 AM | #10 |
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06-13-2012, 03:35 PM | #13 |
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Thicker wire doesnt necessarily mean higher spring rate though it is a good indicator. If the ramp rate is the same yes, if not then need to get them on a spring tester to be sure what the effect is, or at least measure the ramp angle.
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06-13-2012, 08:41 PM | #14 | |
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F: 12.6mm R: 14.35mm |
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06-14-2012, 05:20 AM | #16 | |
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Great job man! this is quite important because the pitch and windings number should be the same, so the wire diameter determines the stiffness. I will come back with my Y4 springs diameter... |
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08-17-2012, 02:45 PM | #18 |
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I have ETK which is BMW's official electronic parts catalog. Springs part numbers are based on the options each car has. I can take a look at how many variations there are when I get a chance.
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08-20-2012, 01:50 PM | #19 | |
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Good for finding cheaters in competition classes that require factory parts too, it's always been a common cheat to grab convertible or loaded-up springs and stick them on a lighter BMW for those kinds of competition classes, and sometimes hard for an unconnected person to know for sure without doing a VIN order
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03-17-2013, 10:35 PM | #20 |
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Bring this thread back to life.
Anyone know the spring markings for an E90 ZCP with 6MT and no sunroof. Listed are the part numbers. I just need the markings that go with them. Front: 31332283563 Rear: 33532283569 Last edited by ///m3e90; 03-18-2013 at 10:00 AM.. Reason: added more info |
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12-10-2017, 03:04 PM | #21 |
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Reviving old thread (pt 2).....
Just bought OEM springs off an 08 E90 M3 which had the X2 fronts and X3 rears. I just got a quick look at his car but it had 6mt and sunroof. Didn't ask about other options. I have an 11 E92 with DCT, sunroof, well optioned with (Conv Pkg, PP2, Enhanced Audio, No ZCP). Right stiffness? |
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04-01-2018, 07:57 PM | #22 |
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The thing that confuses me is how we can order them online. If I look up springs on ESCtuning, there's no options for which spring marking such as X3, X5.
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