02-03-2014, 12:16 PM | #45 | |
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Here's what we know as far as how BMW brands the active suspension today: F3x Series: Adaptive M Suspension F1x Series: Dynamic Damper Control F1x M: M Dynamic Damper Control Now, according to the launch car ordering guide, the F8x has optional "Adaptive M Suspension" as well. So logically, the M Dynamic Damper Control terminology does not apply to the F8x. But, as you no doubt know, it did appear in some official documents from BMW released last week that were full of errors and inconsistencies. So that is likely an error too. The bigger question here might just be: why is BMW branding the technology different for different vehicles? Does that mean that the hardware in the 3 is different from that in the 5? Probably. But exactly what is different? And, do the M counterparts borrow that hardware and merely adjust the software for the M chassis, or is the M hardware different as well? |
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02-03-2014, 02:56 PM | #46 |
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These are two links that might help with additional information:
Video (with some technical description included at .42 seconds in): http://f10.m5post.com/forums/showthread.php?t=759602 Forum: http://www.m3post.com/forums/showpos...7&postcount=44 |
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02-03-2014, 03:07 PM | #47 | |
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I wonder if M Dynamic Damper Control in non adjustable by the driver (thought I saw this was standard on every F8X model). The car will still monitor the road and react to changes etc, but the driver can't explicitly define comfort vs sport. It will still get stiff when you drive it hard but it decides when and where to adjust the dampening?? While the Adaptive M Suspension will still be similar to the M DDC, the optional suspension will allow drivers to select comfort, sport, track etc?? Definitely excited to hear how these suspensions play out on the F8x line. |
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02-03-2014, 07:35 PM | #48 | |
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The difference between MRC's Sports Mode and Touring Mode is pretty big, way more noticeable than the EDC's Soft and Sport. And the Sports Mode, once coupled with GM's PTM, is unbelievable. There is a reason why these MRC systems are on Ferraris. |
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02-03-2014, 09:17 PM | #49 | |
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02-04-2014, 06:37 AM | #50 | |||
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02-04-2014, 08:56 AM | #51 |
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Agreed... Or at best, "Adaptive Sport Suspension" would have made sense within the F30 lineup.
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02-04-2014, 02:14 PM | #53 | |
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I also understand that there is some weight transfer due to roll, dive and squat due to the Cg moving about the roll/dive/squat centers. But I have always understood that this later weight transfer is relatively minimal to the point of being negligible compared to the weight transfer caused by acceleration/traction forces. The weight transfer is what causes the roll, not the other way around (except for the small aforementioned amount). My understanding is that, in transient mode, while the suspension is taking a set, a stiffer damper will resist (slow down) the roll process but the weight transfer still occurs. If the acceleration/traction forces are sustained long enough, the suspension eventually takes a set and at that point the damper stiffness is irrelevant to how much the car rolls and the weight transfer is still mostly dependent on the traction/acceleration forces. Same logic applies to longitudinal acceleration/traction and dive/squat. If you mean stiffer suspension through stiffer springs, yes I agree, there will be less roll, but not less weight transfer. But spring rates are not altered by variable dampers. Thoughts? BTW, great write-up. It was a very interesting read . Last edited by CanAutM3; 02-04-2014 at 05:02 PM.. |
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02-04-2014, 02:22 PM | #54 | ||
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"2VF Adaptive M suspension" There is no other mention about the suspension in either the standard or optional features. EDIT: From the Canadian Product Planning Bulletin: Quote:
Last edited by CanAutM3; 02-04-2014 at 08:30 PM.. |
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02-04-2014, 10:13 PM | #55 |
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Yep, and that jibes with the launch car ordering information for the US as I say. Other regions too.
Though we should not read too much into the branding, it just adds that extra question of why the name is the same for the F3x and F8x while they made a distinction with the F1x 5/6 vs. F1x Ms. |
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02-04-2014, 10:32 PM | #56 | |
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2021 M5 COMPETITION LCI Brands Hatch Gray on SIlverstone, carbon roof, comp wheels, Mperf splitter, carbon pro spoiler, carbon diffuser , carbon paddles, executive pkg. Dinan HAS, RaceChip, dinan spacers, FC stud kit, etc
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02-05-2014, 07:20 AM | #57 |
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From the German price list for the M3 for 2VF:
"Adaptives Fahrwerk M spezifische Ausprägung inklusive Leichtbau. Dämpfersteuerung über Fahrdynamikschalter sowie sportlicherer Fahrwerkauslegung bei gleichzeitiger Wahrung des Fahrkomforts" Free translation: "Adaptive Chassis M specific characteristics including lightweight construction. Damping control with driving mode switch and a sporty suspension while keeping the driving comfort" Marketing speach without a lot of information EDIT: costs: € 1900 |
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02-05-2014, 09:27 AM | #58 | |
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02-05-2014, 10:11 AM | #59 | |
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02-05-2014, 11:11 AM | #60 |
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02-05-2014, 11:26 AM | #61 |
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At the moment, the springs are still sitting in the box. With all the snow/ice every couple of days, I have the car high and dry (and freshly detailed) tucked away in the garage. As soon as the weather breaks for a couple of days, I will get the springs installed ASAP... the wait is killing me.
As for what shop I'll go to for the install, I haven't decided for sure yet. I've called a few places in Northern NJ - some want too much $$, one hasn't called me back. I'm hoping to find someplace good with reasonable prices to work with, as I'm sure I'll be a regular customer there over the years.
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02-05-2014, 12:01 PM | #62 |
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I'm fortunate, I have a certified Dinan installer a few miles down the road. It's an indie shop too!
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02-05-2014, 08:34 PM | #63 | |
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02-06-2014, 10:12 AM | #64 |
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02-06-2014, 10:24 AM | #65 | |
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02-06-2014, 11:14 AM | #66 |
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Hey Racer20, very interesting subject.
By the way, I have the adaptive suspension system on the BMW F20 and I was wondering whether it is the same as F30. More in general, as far as you know, is this system of the kind that has a dedicated ECU? The reason for asking is that some suppliers, including Tenneco, use the term adaptive also for simplified suspension systems that have a limited electronic onboard the damper and no dedicated ECU. Thank you very much |
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