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Robbing the e92 M3 for suspension parts
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12-29-2009, 11:06 PM | #265 |
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..I am slowly wanting to become a mechanic... I just read all 267 postes in this thread.. Orb etc... you are all amazing, I feel more educated every day reading this site ~Frost
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07-05-2010, 01:22 PM | #267 |
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After read this and others threads, to me one thing is clear, before do any mod first go for the bushes parts, then the shocks or anything you want to do.
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07-23-2010, 01:51 PM | #268 |
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This is great info for sure thanks alot. I just came from my BMW dealer in Toronto. I inquired about this upgrade. My parts guy showed me the info, on a 07 335 and 07 m3 the front sway bar is the same diameter as each other, I think 22mm? But the same however. The bushings are different, cost about 60 bucks for all. I order it plus the tension bar too. The rear bar is different size totally.
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07-23-2010, 03:38 PM | #269 |
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Search the site. They are not the same. Same bushing size, but the 335 bar narrows for a few inches in the middle and is therefore less stiff.
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07-25-2010, 03:41 PM | #270 |
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So after installing the Performance Suspension, I'm feeling like float and 'tightness' is still somewhat of an issue. The '11 M3 has none of this. My 350Z with Nismo S-Tune suspension resulted in less float than my current setup. When travelling on the highway, for example, as the roads dips down and comes back up, my car is still too floaty, and I feel like I'm driving a conversion van or something (ok, so I'm exaggerating a little, but you know what I mean). Unless I'm mistaken, all these other M3 bits won't address that as much as they do initial turn-in and body roll. Am I way off base here? Is the Performance Suspension simply too compliant compared to the M3's shocks and springs? Do we have spring rates we can compare?
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07-26-2010, 01:56 AM | #271 | |
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07-26-2010, 10:09 AM | #272 | |
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07-26-2010, 06:06 PM | #273 |
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Well this stinks. I can't stand the float. I was sure the Perf. Suspension would cure this nonsense. I didn't buy a plush Cadillac, I bought a supposed driving machine. Now I float down the street like I'm on a cloud. And you're exactly right, it's the rear end that floats, not the front. What struck me initially after installing this suspension was initial turn-in was sharp, and body roll was substantially reduced. But the float seems about the same to me. I didn't want 3rd party one-size-fits-all, fal apart after two years coilovers. I wanted an OEM solution. I'm pissed!
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07-26-2010, 10:51 PM | #274 | |
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07-26-2010, 11:06 PM | #275 | |
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My understanding from an article in Roundel (or was it Bimmer) is that BMW is using some of the stiffest springs they've ever used in a road car for the 135i perf suspension. If that is true, then a set of different rear shocks might do wonders.
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07-26-2010, 11:32 PM | #276 | |
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07-27-2010, 01:14 AM | #277 | |
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Measured roughly 160 for the 135i front performance springs. |
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07-27-2010, 07:40 AM | #278 |
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Hah! I guess we should never take things at face value...
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07-27-2010, 08:05 AM | #279 | |
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At this point, I feel like anything else I do to my suspension is a gamble. I could try the bushings, spend a ton of money, etc. only to be disapointed once again. I feel like I need to drive a 335i with these bits in it already and then make a decision. Too bad BMW doesn't have test cars with these parts already installed.
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07-27-2010, 10:58 AM | #280 | |
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I wish I had a pair of uses Koni dampers you can try on. |
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07-27-2010, 04:42 PM | #281 | |
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07-27-2010, 05:38 PM | #282 |
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I noticed something very interesting the two time I went to the track. The first time I went I had worn shock mounts and stock wheel/tire setup. The car pushed pretty hard and felt really sloppy in the rear especially through highspeed corners. You could feel lateral suspension movement and the steering wheel would fight you as it ocillated. It was really hard to track a smooth line through long sweepers.
The second time I went I replaced the shock mounts with Dinan's and I put 8.5 in wheels with 245mm tires up front. The wired oscillation was gone and the balance was much better and predictable. Lateral suspension movement was greatly reduced. I was thinking about putting the m3 front tension rods and control arms on for the next time I go to the track. But for now I'm happy. If I had never read this thread I would probably leave my car alone.
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'06 Arctic Metallic 325i | Sport Package | 6MT | Dinan Stage III suspension | Dinan exhaust | 330i manifold swap! Click here! | Active Autowerke tune | 135i Brake Calipers | Deiselboost caliper brackets | E46 M3 front rotors Last edited by e90pilot; 07-30-2010 at 12:04 PM.. |
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07-30-2010, 06:09 AM | #283 |
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Thank you all for the input, much appreciated. I never knew it could be so complicated to dial in suspension settings.
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08-01-2010, 12:59 AM | #284 |
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Solid thread here. Spent he whole night reading it. Needless to say the gf is pretty pissed. Anyways my "thrust rod bushing" are torn and leaking but are still Covered under warranty. After reading this thread I've gathered that the thrust rod is the upper control arm aka wishbone, which houses the bushing and the lower control arm is aka tension rod. Hopefully that's right or else I've wasted the thousands trips to and from realoem.
Is there and advantage of just having either of the control arms replaced? I'm sure I could buy the "m3 thrust rod aka Upper control arm aka wishbone and have it installed for free under warranty (assuming that they need to take off the old oem thrust rod to replace the bushing)? How much more labor time is needed to replace the tension bar if the main goal is to swap out trust bar? Also are there any other suspension parts (a side from coil-overs) that i should get done now to save on labor like a front sway? I'm Not a guru on suspension components so any questions comments and answers would be helpful. TIA PS. I understand that rear bushings would help very much but the cost is too much at this time. I'm basically looking to beef up the front since I'm already having some work done up there. I know I can't fully ignore the rear to have a perfectly balanced car but are there any down falls to having a stiffer car up front without supporting the rear? Last edited by CubanJJ09; 08-01-2010 at 01:10 AM.. |
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08-01-2010, 01:01 AM | #285 | |
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The two arms you see on the right are the thrust arms. The others are the wishbones. Hope that helps. |
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08-01-2010, 01:22 AM | #286 | |
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edit: after hours or reading i now know the difference and that the wishbones add the neg camber Last edited by CubanJJ09; 08-01-2010 at 03:46 PM.. |
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