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BMW 3-Series (E90 E92) Forum > BIMMERPOST Universal Forums > General BMW News and Cars Discussion > BMW Plans Rollout of Carbon Fiber Wheels and More CFRP Components



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      02-20-2014, 10:51 PM   #67
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In 10 years metal wheels will probably be looked at as heavy relics of the past.
I think if carbon brakes can deliver the low dust, long life, and high performance they promise, steel brake rotors may eventually go the way of the buggy whip also.
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      02-20-2014, 10:57 PM   #68
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Don't care if they are going to be $5k or $10k because sh!t is going to hit the fan when the wife curbs them as these most likely won't be repairable.

If I had to take a guess BMW will price these about $6-8k.
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      02-20-2014, 11:08 PM   #69
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Sounds good

Good news. Let's see how affordable these will be.
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      02-20-2014, 11:22 PM   #70
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carbon fiber performance seats??
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      02-20-2014, 11:33 PM   #71
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Carbon Revolution has a set out. From what I read on their website they seem pretty amazing. The big downside is that they are 15k for a set.

Www.Carbonrev.com
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      02-21-2014, 12:50 AM   #72
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That's the future folks: BMW future cars will be CFRP intensive (5 and 7 series) and I am sure that they will be the leaders in mass produced automobile with this material...

A very interesting article on the reasons why from bloomberg: http://www.bloomberg.com/news/2013-1...auto-edge.html

They want to "get the expense of a carbon-fiber frame down to the level of aluminum by 2020"
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      02-21-2014, 01:32 AM   #73
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      02-21-2014, 01:37 AM   #74
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Safety would have been a concern. But I am sure the engineers at BMW tested the hell out if them.

I know of companies that make CF wheels but the putter diameter is still aluminum.
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      02-21-2014, 01:37 AM   #75
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Quote:
Originally Posted by Paul-Bracq-BMW
That's the future folks: BMW future cars will be CFRP intensive (5 and 7 series) and I am sure that they will be the leaders in mass produced automobile with this material...

A very interesting article on the reasons why from bloomberg: http://www.bloomberg.com/news/2013-1...auto-edge.html

They want to "get the expense of a carbon-fiber frame down to the level of aluminum by 2020"
That would be awesome.
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      02-21-2014, 01:46 AM   #76
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Quote:
Originally Posted by bjayfan View Post
That will depend on a great deal more than just lighter wheels.

Lowering unsprung weight will allow the suspension to react more quickly, and whether it's a sport setup or a luxury setup, I'd suspect that comfort will increase.

Now if they'd just ditch the RFT tires.....
I agree that ride will be dependent upon several factors but reducing unsprung weight is a huge advantage to being able to tune the ride and handling and it has an tremendous impact on braking performance. This can end up being a major performance advantage for BMW.
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      02-21-2014, 01:52 AM   #77
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Quote:
Originally Posted by fravel View Post
I'm an engineer at a test house that specializes in mechanical testing of carbon fiber and composites for the aerospace industry. I can't talk any hard numbers but I will say that I think all the naysayers will be quite surprised when these components come to market. The carbon fiber and composites industry has come a long, long way. CF doesn't shatter like glass, and it typically offers phenomenally better properties than metals (depending on the application).

Regarding curb damage, should you manage to hit them hard enough to get all the way through the clear coat/finishing resin, you would still only be able to damage 1-2 plies worth of carbon at the most. The damage could easily be filled back in with resin and polished back to shine, sure the top weave might be slightly imperfect but it will be very hard to notice. These wheels will have a very large ply count and structural integrity will be unaffected. You'll break suspension bits before you fail one of these wheels.
Does CFRP crack under stress? If so, does hitting a pothole with a CFRP wheel result in a shattered wheel instead of a bent(alloy) wheel?
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      02-21-2014, 02:18 AM   #78
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Quote:
Originally Posted by brianhn1 View Post
Anyone remember Dymag about 6-8 years ago?
Yeah, but the centers weren't CF like the Weds Sport wheels.
And these weds sport wheels were ~$12k per set in 2008.




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      02-21-2014, 02:52 AM   #79
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How about oem CF three piece wheel, whit aluminium or forged stainless steel outer rim. That would be nice...

Last edited by Tåst; 02-21-2014 at 05:11 AM.
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      02-21-2014, 04:13 AM   #80
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Yeaha!

Let the lightweight revolution begin! BMW go on a diet and all shall enjoy the sweet taste of improved dynamics (and bragging rights).
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      02-21-2014, 04:15 AM   #81
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Yes!!
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      02-21-2014, 04:28 AM   #82
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Doesn't Moto GP already use full carbon fiber rims on their bikes?? If they do I can see car rims being similar in performance
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      02-21-2014, 05:39 AM   #83
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Anybody remember that the one and only one M8 had I believe was a hybrid wheel---carbonfiber hub, and metal rim...
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      02-21-2014, 05:52 AM   #84
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Quote:
Originally Posted by bavarian19
Did I hear spare wheel? Maybe they can have a comeback and we can call it quits on run flats. I would have zero issues with a cf spare wheel.
I can see people ditching the regular wheels just running spare wheels instead.
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      02-21-2014, 06:02 AM   #85
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      02-21-2014, 06:43 AM   #86
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If it works on Boeing 787 you can bet your mother it will work for cars ... or you may bet other members if you like her. BMW and Boeing partnered to buy raw material and produce mass market cf parts. The aerospace and motorsports have many areas of overlap, i.e. parts, weight, aerodynamics, structures ...
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      02-21-2014, 06:49 AM   #87
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Quote:
Originally Posted by brianhn1
Anyone remember Dymag about 6-8 years ago?
Dymag cf rims with magnesium spokes were for around $10-11k
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      02-21-2014, 07:16 AM   #88
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It's always great to have more performance options
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