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E90 M3 (Sedan) | E92 M3 (Coupe) | E93 M3 (Convert) (2008-2013) {Engine: S65 - Max Hp: 414 hp (420 hp Euro) at 8,300 rpm / 295 lb/ft at 3,900 rpm}


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Old Thu, Jun-18-2009, 10:38:41 PM   #11
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Quote:
Originally Posted by BENJMNS View Post
they need to do a back-milled BBS LM wheel - all these others still don't look as good
They already have...(sort of)

It's called the LM-R.

They came out with that slightly revised design just for that reason. No, it's not exactly the same spoke design, but that's about as close as you're going to get.

I was told that all the new BBS wheels that incorporate this new technology, will have the "R" designation attached to it's name. Hence the LM-R & CH-R models.

Note: The "R", as you may already assume...means racing.
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Old Thu, Jun-18-2009, 11:14:31 PM   #12
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Originally Posted by Cleveland View Post
You must be thinking about the 'regular' CH Black Series.

To the naked eye, they look like the same wheel.

Tire rack sells the CH, not the CH-R. (not yet anyway)

The new CH-R wheels are just coming out now (in Europe), and I don't think they are available anywhere in the United States.

That's a bummer...unless you have a connection in Germany.

The new CH-R wheel has a back-milled spokes (like the LM-R) to reduce weight. Similar to a H-beam connecting rod.
I wonder if the weight of these was misprinted on the BBS web site. According to BBS, these wheels weight 27.2 and 29.4 pounds (front/rear). That's 5-7 pounds heavier than other 20 inch wheels. Given these are racing wheels, I've got to believe that's a misprint.

Anybody know for sure?
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Old Thu, Jun-18-2009, 11:21:40 PM   #13
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I wonder if the weight of these was misprinted on the BBS web site. According to BBS, these wheels weight 27.2 and 29.4 pounds (front/rear). That's 5-7 pounds heavier than other 20 inch wheels. Given these are racing wheels, I've got to believe that's a misprint.

Anybody know for sure?
Heh, 20's and racing together seem to be an oxymoron.
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Old Thu, Jun-18-2009, 11:30:17 PM   #14
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car needs to be slammed. before any wheels go on

these are stock wheels!
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Old Thu, Jun-18-2009, 11:31:08 PM   #15
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I believe those are the correct weights. Look at the weight of the CH's. They are a very heavy wheel.

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Old Thu, Jun-18-2009, 11:53:22 PM   #16
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loved my old CH's but didn't love the weight. wonder how much this new technology reduces the weight of these tanks...
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Old Fri, Jun-19-2009, 12:25:51 AM   #17
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Originally Posted by PencilGeek View Post
I wonder if the weight of these was misprinted on the BBS web site. According to BBS, these wheels weight 27.2 and 29.4 pounds (front/rear). That's 5-7 pounds heavier than other 20 inch wheels. Given these are racing wheels, I've got to believe that's a misprint.

Anybody know for sure?
That weight is actually correct for the 20" versions...

I have a BBS document that states the kg weights, and that conversion rate (in pounds) is accurate.

You may think that's heavy, but that's pretty damn good for a 20" CAST wheel with those front and rear withs (9" F, 10.5" R) . And that's for arguably the best quality wheel manufacturer on the planet. (BBS) Not bad for a set of 20" wheels that cost $2700 bucks retail.

Most of the wheels in a 20" size for the E9x M3, are in the mid-to-upper twenty pound range in weight. Hell, even some of the 20" FORGED wheels are hovering around or slightly over the 30lb. mark.

Several very expensive 19x10.5 Forged rear wheels ($1000-$1500 ea) are in the mid 20lb range as well.

CH & CH-R wheels are flow-formed CAST wheels. (which is stronger than the cheaper gravity CAST wheels) That's as good as it gets for a CAST wheel product. Considering the limitations of CAST wheel manufacturing, these weights are good for a wheel THAT big.

To put these weights in to their proper perspective, the standard CH wheel in a smaller and narrower 19" size is very similar.

BBS CH "Black Series" 19's

Front wheel: 19 x 8.5 (20 offset) 26.1 lbs.

Rear wheel: 19 x 10 (20 offset) 27.9 lbs.

Since a 19" CH-R does not exist at this time, there is no way to make a true apples-to-apples comparison. (yet)

Still, even with a smaller diameter wheel, and a narrower front and rear widths, a the two wheels are still very close in weight. When the 19" CH-R is released, the weight advantages will be much easier to see.
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Old Fri, Jun-19-2009, 01:01:39 AM   #18
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cleveland, any more side shots of that AW with the black CH-R's?
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Old Fri, Jun-19-2009, 03:55:00 AM   #19
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When you look at the weights of expensive and high-quality wheels I continue to be amazed at how good the OEM 19's really are. Forged and light and practically free when you consider the cost to upgrade over the 18's. I think I will be content for a long while with the stockers.
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Old Fri, Jun-19-2009, 04:05:26 AM   #20
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