02-26-2014, 01:28 PM | #23 |
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Great thread with good insights. I too am curious and skeptical of the adaptive suspension on the F80. My skepticism is the longevity before expensive repair or replacement. Recent experience with a 2007 328xi incurred multiple electrical gremlins. and it was frustrating to take the car back the dealer multiple times, only to be told, "we are not sure why you are having this issue". I dumped it and traded for a 2011 328. Although BMW pushes complex technologies, the track record for reliability is disappointing.
I too enjoy 2 track weekends a year, and my DD commute is all surface streets, with a few opportunities for spirited curves. I will keep watching the threads once car start hitting the streets, my target date is spring next year. |
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02-26-2014, 01:48 PM | #24 |
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So you're saying that Racer's comment about the KW with DDC was wrong? Because that's what I was referring to with my reply. I wasn't talking about the typical non-active-but-nevertheless-adjustable aftermarket suspension.
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02-26-2014, 01:50 PM | #25 | |
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http://www.kw-suspensions.eu/int/kw_ddc.php
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02-26-2014, 01:55 PM | #26 | |
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02-26-2014, 02:11 PM | #27 |
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the suspension should hold up fine for the duration of the warranty period. if it doesn't then take it in to have it checked. i haven't had any issues with oem suspension on the e90's i have owned.
i think also you can safely lower the car slightly with properly designed aftermarket springs or sleeve over kit. obviously if going that route and dampers blow then bmw won't replace your shocks. at which point you are free to get something more aggresive anyways coilovers... hmm. on a track day what do they really do for you? i can see adjustable camber plates helping with tire wear on and off track. corner balancing also greatly improves stability but the oem suspension should already be balanced quite well. I think unless you are on a perfectly smooth course, the adaptive dampers will do just as well or better. ultimately the biggest benefit is you spend more time driving versus messing with settings. i'm thinking all the major brand suspension companies are developing smart adaptive coilovers that will be controlled by your cel phone along with relaying data to a central database. get statistical proof of each setting that works best corner by corner. now that would be a coilover system i would try
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02-26-2014, 02:27 PM | #28 | |
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Maybe eventually some day the car will download the optimized program as determined per all of the collected data and load it when you drive onto the track, setting up the suspension automagically. |
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02-26-2014, 02:44 PM | #29 |
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I always thought that messing with M suspension was silly although I understand that some people drop their cars using springs for stance purposes. Those guys usually care not about proper track set up.
Either way I always get a chuckle out of that. |
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02-26-2014, 02:51 PM | #30 | ||
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I also think their description is a little vague, but my interpretation is that it is "electronically" adjustable, but not active, as in, they have a computer that adjusts the dampening every millisecond from all kinds of data gathered. Just how I read it. Could be wrong... |
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02-26-2014, 03:03 PM | #31 | |
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02-26-2014, 03:08 PM | #32 | |
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02-26-2014, 03:41 PM | #33 |
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Lowering springs with adaptive suspension
I have the Dinan Stage I springs on my E92 adaptive suspension, which has a modest drop. The decrease in ride comfort is minimal, but it is there. I would still consider this approach with the F82 due to the better stance it gives the car.
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02-26-2014, 03:42 PM | #34 | |
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02-26-2014, 03:43 PM | #35 |
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Thanks, good to know and Dinan makes quality products even if it's over priced.
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02-26-2014, 05:41 PM | #36 |
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After reading all the responses, esp Racer20 and KennyPowers, and thinking about how my H&R springs affected my otherwise stock 328i, I think I'll order 2VF and leave it alone.
I really love the look of a properly lowered car but I wont put looks over performance ever again. |
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02-26-2014, 06:04 PM | #37 |
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OMG..MY KV3s ARE WORTHLESS! Thank GOD I personally didn't pay for them...but they will be up for sale when my vert M4 comes out! Roughest ride and noisiest freaking things Ive owned!
...okay...back to discussion... |
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02-26-2014, 06:25 PM | #38 |
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BMW's adaptive suspension is quite good in the f30 series. It allows for the aperture of each strut to be independently and constantly changing to road conditions to maximize tire patch/comfort/control based upon pre-determined settings (i.e. comfort vs. sport). The programs are pre-determined, but the adaptability is - in effect - infinite.
Short of an air suspension, that can not be mimicked by a fixed strut valving and spring. They are extremely reliable - as in, as reliable as a normal strut. So when you buy a car with normal struts, you expect what, 100k out of them? That's probably consistent here. However the strut replacement cost is higher because you are getting a superior strut technology and capability. ... The only thing "better" is an air suspension with a true variable ride height and effective spring rate. This requires an onboard compressor among other weight-adding devices, and they aren't compact. I'm rocking a air suspension on my 07 v10 tdi touareg and at 124k miles it's fine and offers me to change my ride height by 8" (from loading height, which you can't drive on, to sport mode, comfort mode, off-road, and extreme off-road heights). However, if you are going to see a true adjustable spring rate like an air suspension in a sports car I imagine you'll see it in professional racing first. |
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02-26-2014, 06:31 PM | #39 | |
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02-26-2014, 06:55 PM | #40 | |
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Im still trying to figure out how you got "you know who" to do a good install for you but they really botched up my Ground Control sleeve kit and I had to pay another shop to do it correctly...... |
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02-26-2014, 07:06 PM | #41 |
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Thanks for all the input guys. I think I'm pretty much set on getting the M-Adaptive suspension. Really not a bad upgrade for $1k, although some could complain that we get nickel-n-dime'd for something that's standard in the UK, or even on the 235.
In the end, I think it would be worth the extra expense of replacing them, when the time comes, over standard passive suspension components. |
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02-26-2014, 07:09 PM | #42 |
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I have heard that from many people, some are just squeaky and some are not.
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02-26-2014, 08:21 PM | #43 | |
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But I'm done modifying this car. I'm going to put it all back to stock and sell it or lease swap it so I can get the M4. |
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02-26-2014, 09:18 PM | #44 | |
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If you profoundly meddle with the car's suspension, you are just ruining the car. They have a whole army of scientists who analyze the components, chassis and diagnostics. They know more than you. If you must lower your M3/M4, just understand that you're not going to match the refinement of what those guys did in the "stock" version. It cannot and will not happen. Just get a 3 series and blow it out. Revamping the suspension is just throwing money away. You're paying a hefty premium for the engineering on an M car. |
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