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07-18-2013, 11:41 AM | #89 |
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07-18-2013, 11:57 AM | #90 |
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Lets hope this version is trackable. Can it get through a 30 min track session without limp mode? Went to a BMWCCA event the other week. They were giving rides in the new M5, it went into limp after 1.5 laps.
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07-18-2013, 02:13 PM | #91 | |
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So yes, indeed one has about 170 lb (again based on link above) to work with for seating weight in the E92 M3. That also assumes the 435i seats haven't already undergone some lightening work which surely they have. You can reduce the weight on many fronts, leather, foam, electronics and most importantly the motors and steel frame parts. There is very little steel in the rear seats and no motors. Thus the vast majority of the savings will come only from the front seats. The challenges are that M3 owners expect a daily driver. You can't put non power seats in, some may call that sad, but it is the reality. You also can't make really firm minimal padding seats. BMW also won't sacrifice on safety. Thus if a seat airbag got nixed it would probably migrate to a door. Last but not least carbon fiber is extremely expensive. So thus again, 50 lbs is roughly 50% of the front seats and that is extremely aggressive and doubtful. Look again at the link above using BMWs own seats already available:
IT COSTS A LOT OF MONEY TO SAVE WEIGHT! Sure that is not BMWs cost but fancy light seats with safety are darn expensive and not consistent with BMWs agressive cost savings programs. Anyway back to the M4. A modest perhaps 30 pound savings is certainly possible. However, BMW may provide and optional seat, likely IMHO, such seats could be more extreme in design, not have motors and save way more than 30 pounds. But again they will be expensive and optional. I'm not being a pessimist here, just an informed realist.
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07-18-2013, 02:33 PM | #92 | |
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http://www.bimmer-mag.com/issues/113...2#.UehBbWt5mSM Furthermore realoem.com shows the 3 liter TT N54 at ~$11k and the S65 at ~$23k. The S65 is standard in the most basic M3. There should be room to spend significant $$$ on lightweight materials within reasonable end cost. The i3 and i8 also brought potential to share in R&D and production materials for CF parts plus added volume advantages. This could make earlier cost prohibiting constructions within reach for the M3's price point. Time to be positive and look at possibilities and not be so negative with potentially old limitations. They kept the M5 pretty much the same weight as the 550i without the CRT treatment. Now if they do the same with the M3 vs the 335i and then add the CRT treatment and lighter wheels they are in striking distance of 3300 lbs without doing anything they haven't already done. Then add a few innovations and what do you know? Maybe it's not such a stretch after all. Last edited by solstice; 07-18-2013 at 02:39 PM.. |
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07-18-2013, 06:18 PM | #93 | |||
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We're getting seriously OT here, but mark my words. There is going to be a ton of expensive options for the M3/M4 (seats likely, brakes virtually for sure, and probably others). There will also be special entire versions (CSL, CRT, GTS, whatever they will be called). Said options and models will be both very expensive but will save considerable weight. Without these options there is no way BMW will get sub 3300 lb CURB weight. We're also going to see a big hit on the base price of the M4 and despite the same base engine the M4 is going to cost significantly more than the M3. If you feel otherwise post your claims and we'll see who is right. I think other than that we'll just have to agree to disagree.
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07-18-2013, 07:05 PM | #94 |
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This has been driving me insane -- every picture that gets published of the preproduction cars, the first thing I do is zoom in on the gauge cluster to catch a glimpse of the redline. Without fail, every time, it's just a bit too far or a bit too blurry. Frustrating!
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07-19-2013, 03:28 PM | #96 |
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It doesn't make very much sense to me for the M3 sedan to share the headlights with the M4 coupe considering there will be an M4 Gran Coupe coming out soon. I believe, instead, what we are seeing is LED headlights on the F30/F80 body style for the first time. It makes more sense for the M3 sedan to have Xenons as standard and LED lights as optional.
Everything else (carbon fiber seats, "aluminum and magnesium and carbon fiber in the crash zones" from Motor Trend interview) sounds great so far. |
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07-19-2013, 03:30 PM | #97 | |
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http://f80.bimmerpost.com/forums/sho...d.php?t=866768 Motor Trend: Tell me about light weight. Is the new M4 lighter than a 435i? Friedrich Nitschke: Absolutely. We will use lightweight parts in the places where it matters, at the ends of the car and high up, and in high-rpm parts of the powertrain. A carbon fiber roof, of course, and aluminum and magnesium and carbon fiber in the crash zones. An aluminum hood, and a new carbon fiber trunk lid. |
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07-20-2013, 08:47 PM | #98 | |
Still waiting...
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