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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > Wheel Manufacturing Processes: Low-Pressure Cast vs Gravity Cast



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      10-14-2009, 11:21 PM   #23
Mooreski
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I second Alan I.'s question. Anyone know how Forgestar wheels are cast before the flow forming process? Since the flow forming only impacts the structure of the rim, I'm curious as to how the spokes are cast since that would also impact strength.

Also, since it's one piece, aren't you heat treating the whole wheel? I'm assuming you'd use a T6 heat treatment since it's simple and pretty standard. I haven't looked at T6 in a while, I can't remember how much of a risk of over-aging there is. Since the flow forming wouldn't introduce mechanical deformation in the spokes, which wouldn't lead to recrystallization... are you risking coarsening of the grains in the spokes?
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      10-15-2009, 09:33 AM   #24
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Bump for answers...

There are tons of vendors here that push Forgestar wheels and I'm sure someone could get us some info or even pics of the manufacturing process from their actual facility.
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      10-15-2009, 07:58 PM   #25
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Do you guys know what type of manufacture method is for Vossen base wheel line? the vvs083/vvs082 for example.
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      07-13-2010, 10:13 AM   #26
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this thread is great, why did it end??? if anything it should be stickied.

Last edited by kjrulz; 08-19-2010 at 10:26 AM.
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      07-14-2010, 09:03 AM   #27
Alan l.
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Cause nobody wants/able to provide much proof of their manufacturing process which sucks for us the consumer.
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      05-02-2011, 02:16 PM   #28
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Hi,
What a great thread.
The Advan racing is so light. What's the load rating on this wheel please?
What's the load rating on Volk?
Thanks,
D
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      05-02-2011, 02:58 PM   #29
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Garage List
2008 335i E90  [4.00]
CCWs - Forged USA
Rotiform - Cast, Forged USA
R-Worx - Forged USA (using German forged aluminum blanks)


Those are some of the once I looked into.
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      05-02-2011, 03:15 PM   #30
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Correct me if i'm wrong but i don't believe Linea Corse are LPC, rather just gravity cast wheels.
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      01-25-2012, 03:49 AM   #31
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bump on a interesting topic that still needs questions answered
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      01-25-2012, 11:48 AM   #32
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Chances are slim....the market is flooded with all these new wheel companies trying to make a quick buck with cheap, sub-par wheels. This is info they DON'T want the consumers to know....

What i've learned with wheels....you get what you pay for 90% of the time. Go with a reputable big name company that is at least LPC unless the roads are pristine in your area. At the same time 8K wheels from ADV1 doesn't make them any better than 4K wheels from BBS either.
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      01-25-2012, 07:36 PM   #33
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Am I the only person who notes that gravity "spun" wheels are in most all scenarios better than low pressure cast? Think about it... The g's and vacuum created with a centrifuge-like device would be much greater and I would think also more evenly.

Am I wrong?

Quote:
Originally Posted by crimsone90 View Post
Forgestar, If you are saying that Forgestar have a flow-forming machine in their facilities I would schedule an appointment with them and will try to make it there next week.

Advan, please see attached.

VMR, please see below:

From Peter himself. Source: http://www.e90post.com/forums/showthread.php?t=14304 Post: 12

I have also heard Peter himself state this personally.



Tom @ EAS, VMR largest distributor regarding the new V713 at M3Post. Source: http://www.m3post.com/forums/showthread.php?p=4813986 Post #15.



Expect all these posts to be edited/deleted after I post them here so check them quick.
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      01-25-2012, 09:58 PM   #34
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Great thread! Hope it keeps going!
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      01-26-2012, 08:23 AM   #35
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great info!
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      01-26-2012, 09:07 AM   #36
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just to make a slight distinction within the BBS brand.

BBS - Flow Form Cast, Germany

BBS - Forged, Japan

Quote:
Originally Posted by Ron************ View Post
I think I wrote something like this a while back.

But lets add to the Heirarchy of the production method.

...


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      02-24-2012, 04:32 AM   #37
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How about MORR? Seems to be the more affordable of the forged?
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      06-06-2014, 02:16 AM   #38
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Just for reference, Advan also offers forged monoblock line such as the rz-df and the rs-df's.

Btw this is a great thread w/ useful info when making such a huge purchase for our cars.
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