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BMW 3-Series (E90 E92) Forum
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Birds Suspension Vs BMW Performance Suspension Vs AC Schnitzer Suspension
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01-31-2013, 05:55 PM | #23 |
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I looked into this with my car as I find the rear end has a tendency to bounce on bumpy corners.
Both kevin Bird Birds and Chris Rositer AC Schnitzer guaranteed their work and would put car back to standard if you we're not happy. Both where about the same price fitted. Both had test cars. I would pay them both a visit. Looked at BMW performance a touch cheaper and the koni fsd kit cheaper again and oe replacement so would not affect insurance. I would steer clear of anything that is adjustable. Theory is good, but the reality is you will have 1000's of combinations that won't be right and only one that works.
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02-01-2013, 12:21 PM | #24 | |
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02-01-2013, 04:51 PM | #25 | |
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I have been to see kevin, around the time this thread was started. He took me around in his E92 but i think i might need another ride in it. Regarding insurance, are you saying if i went for the BMW kit that i wouldn't need to tell my insurance company, or i would but they won't increase my premium? |
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02-02-2013, 07:27 AM | #26 | |
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The Koni yellows set at the midway damping adjustment gave very good ride quality, much improved over the standard M-sport setup, but compromised for ultimate handling due to the softish spring rates. A very good cheap upgrade over standard IMO. |
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02-02-2013, 07:43 AM | #27 | |
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Handling and ride quality is very personal and subjective. What one person thinks is compliant, another will find too hard etc Also, different weight and size wheels and tyres, and different models, i.e. pre/post LCI have different track, vehicle weight etc so will have a different requirement in regards to optimum damping due to changed motion ratios and unsprung weights. Another factor is if you upgrade anti-roll bars, this will effectively change the spring rates and require different damping. |
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02-03-2013, 03:17 AM | #28 | |
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All true, but companies like BMW, Birds, Hartge, Schnitzer spent 1000's developing suspension systems that work for a particular model of car with engineering teams, professional drivers etc. My point is that a normal bloke with an adjustable system and armed with a screw driver and the but dyno in all likelihood won't get it right.
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02-03-2013, 05:45 AM | #29 | |
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On the other hand, manufacturers don't always get it right even with so called experts and plenty of money invested in testing and development. |
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02-06-2013, 01:19 PM | #30 | |
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335 - Öhlins//Swift//M3 front suspension//M3 subframe bushes//Quaife LSD//AR Design Catless//Forge Intercooler//Alcon BBK//Goodridge//AFE//RPI//Fenders - SOLD M4-Mineral Gray/Full Shakir Orange/DCT/M Ceramic/M Adaptive Susp. |
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02-06-2013, 03:31 PM | #31 | |
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I think i have made my decision on what kit to go for when i do upgrade, and the Ohlins kit is my preference at the moment. However i will probably have to wait a few weeks before i can commit. Any advice on where to purchase? The best price i have seen is £1710 from BG Motorsports here in Northampton. I think they are a damper workshop and an Ohlins dealer, so i do feel comfortable with them. I have read a few threads on the springs, especially the swift ones. Am i right in thinking that the ohlins springs are better for predominantly road use, and the swifts for mainly track use? Also what were your reasons for not liking the supplied springs? |
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02-08-2013, 11:13 AM | #32 |
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I went to see techevo today, brilliant guy and a true enthusiast. His workshop is full of interesting drivetrain/suspension components
Took me around in his E91, which had the Ohlins kit and M3 bits, and i was nearly about to cling on! I guess i am used to the awful m-sport suspension, and my brain just thought it's going to get hairy! The car was amazing. It really did feel like it was running on rails and nothing could unsettle it, very impressive. I also had a drive and the damping is amazing. When going over speed humps i would normally slow right down, but in his you can carry on like its not there, and still the car feels like it's landing on a pillow! I can't comprehend how that is possible whilst also being firm at the same time in other scenarios. Admittingly he did replace a few suspension bits, so some of the improvements were probably down to that, but the damping is much better. It's how BMWs should come out of the factory. Oh and this was on a quite firm setting as well, 8 clicks from the max hardness! |
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02-10-2013, 03:01 PM | #33 |
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My main problem with the ohlins springs was with the rear. They were so soft my tyres were rubbing with 20mm spacers on. Not to mention what was happening when I had some luggage in the trunk.
Ive updeted my front suspension and the rear subframe bushes with the m3 bits as well. It does not change much in terms of comfort. Improves the turn in a bit and keeps the rear very planted. None of that jumpy twitchy rear track nonsense. Techevo, what spring rates are you currently running, if you dont mind me asking?
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02-10-2013, 03:19 PM | #34 |
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I also want to replace the rear subframe bushes to get rid of the awful twitch. Any ideas of the best place to get genuine new M3 ones? And what other parts would you recommend me replacing on the rear whilst i do the bushes?
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02-10-2013, 05:12 PM | #35 |
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I just ordered them from bmw. Well the rear diff ofcourse it should be the other way round, change the bushes as youre upgrading the diff
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335 - Öhlins//Swift//M3 front suspension//M3 subframe bushes//Quaife LSD//AR Design Catless//Forge Intercooler//Alcon BBK//Goodridge//AFE//RPI//Fenders - SOLD M4-Mineral Gray/Full Shakir Orange/DCT/M Ceramic/M Adaptive Susp. |
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02-10-2013, 05:18 PM | #36 |
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02-10-2013, 06:13 PM | #37 |
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It will cost you closer to $300 for all 4 M3 subframe bushings.
EDIT: Just noticed you're from the UK so ya, around 200 Euros. |
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02-10-2013, 06:20 PM | #38 |
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which is exactly the same price ;]
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335 - Öhlins//Swift//M3 front suspension//M3 subframe bushes//Quaife LSD//AR Design Catless//Forge Intercooler//Alcon BBK//Goodridge//AFE//RPI//Fenders - SOLD M4-Mineral Gray/Full Shakir Orange/DCT/M Ceramic/M Adaptive Susp. |
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02-11-2013, 04:29 AM | #39 | |
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335 - Öhlins//Swift//M3 front suspension//M3 subframe bushes//Quaife LSD//AR Design Catless//Forge Intercooler//Alcon BBK//Goodridge//AFE//RPI//Fenders - SOLD M4-Mineral Gray/Full Shakir Orange/DCT/M Ceramic/M Adaptive Susp. |
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02-11-2013, 06:55 AM | #40 |
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Standard Ohlins fronts, 343lbs, uprated 672lbs rear.
I've just received some new Swift springs from Harold@Auto weeks (Thanks!) 400lbs front, 800lbs rear as the rates above are still too soft for me. Will fit in within the next month. No revalving is required with theses uprated springs. |
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02-11-2013, 07:47 AM | #41 | |
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I remember Ohlins from many years ago when racing snowmobiles in the upper midwest. They had the best suspensions even 25 years ago...though expensive and generally not at all common. |
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02-11-2013, 07:59 AM | #42 | |
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335 - Öhlins//Swift//M3 front suspension//M3 subframe bushes//Quaife LSD//AR Design Catless//Forge Intercooler//Alcon BBK//Goodridge//AFE//RPI//Fenders - SOLD M4-Mineral Gray/Full Shakir Orange/DCT/M Ceramic/M Adaptive Susp. |
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02-11-2013, 11:01 AM | #43 | |
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02-11-2013, 11:18 AM | #44 |
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hehe, I think I know the answer to this one ;]
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335 - Öhlins//Swift//M3 front suspension//M3 subframe bushes//Quaife LSD//AR Design Catless//Forge Intercooler//Alcon BBK//Goodridge//AFE//RPI//Fenders - SOLD M4-Mineral Gray/Full Shakir Orange/DCT/M Ceramic/M Adaptive Susp. |
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