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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, Jan-29-2005, 12:43:02 AM   #1
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Question Carbon-Fiber Roof

A friend told me that this option is available for the current M5 similar to the roof scheduled for the new M6. Is this accurate or is it a non US option?

From BMW's Website regarding the roof on the new M6:
Quote:
"The lightweight carbon-fiber roof shifts the physical center of gravity of the car further down than the weight of a normal steel roof"
Thanks.
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Old Sat, Jan-29-2005, 12:44:03 AM   #2
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I havent seen anything officially posted.
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Old Sat, Jan-29-2005, 12:52:07 AM   #3
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Read this somewhere as well.
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Old Sat, Jan-29-2005, 01:02:01 AM   #4
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they better give us this, if true, because that's my next ride

then again, I like a moonroof...
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Old Sat, Jan-29-2005, 01:10:00 AM   #5
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Quote:
Originally Posted by ArtM3
they better give us this, if true, because that's my next ride

then again, I like a moonroof...

Moonroof, CF, What else you want there Art? A rocket launcher? lol **** the moonroof. The CF roof acts the same as lowering the roof by 3 inches... You can imagine the benefit.
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Old Sat, Jan-29-2005, 01:12:39 AM   #6
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Quote:
Originally Posted by gabriel6th
Moonroof, CF, What else you want there Art? A rocket launcher? lol **** the moonroof. The CF roof acts the same as lowering the roof by 3 inches... You can imagine the benefit.
yea, but I want it all! lowering the roof 3 inches, that's a healthy shift in the center of gravity...wonder how much weight?
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Old Sat, Jan-29-2005, 01:25:06 AM   #7
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no, that's no going to happen.
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Old Sat, Jan-29-2005, 01:38:04 AM   #8
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Probably not.

Oh, wrong section
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Old Sat, Jan-29-2005, 03:12:34 AM   #9
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It might.. but prob just in a special edition... like CSL or maybe ZCP...
And lowering the roof 3 inches? that'll lower the CG about 1/4"... maybe 1/2" TOPS.... I mean, how much does a roof really weigh?? Even if it's 150lb with sunroof, that's only like, what, 4% (I forgot how much M3 weighs).. .so, ok, say the CG is 1/2 the height of the car, which is say, 5 feet... hmm take 2% from half of that... that's like a half an inch... basically, unless you want to hardcore race this car and are interested in doing all the weight-saving mods, you are just as well off having the sunroof, and just lowering the whole car 1/2" with $400 springs... which is probably a LOT cheaper than the CF roof option... I dunno, it's late.. (well, not so much) but I've had enough to drink... so my head isn't all clear...

Oh wait, I forgot to add the weight of the roof... which is say, 50lb.. so shave 100lb... so really, more like 1/3" lower.. not worth it...
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Old Sat, Jan-29-2005, 03:14:02 AM   #10
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cf roof saves 10lbs on m6...
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Discussing Carbon-Fiber Roof in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)