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Old Fri, Jul-12-2013, 11:24:47 PM   #41
ApexRaceParts
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

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Originally Posted by bimmerfan08 View Post
I'd be in for a group buy as well. My OEM 18s are starting to show wear and will need to be refinished...would rather just get new wheels.
That's a great idea. We hope to see you on board with our 2014 group buy!

Last edited by ApexRaceParts; Thu, Jun-05-2014 at 09:18:40 PM.
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Old Sat, Jul-13-2013, 04:10:03 AM   #42
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

15+ track days and 0 issues. Love 'em! Maybe jump on the GB for a spare set. What other color ya think??

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'02 E46 M3 TiAg 6MT | GC | Koni | Eibach | GruppeM | Apex ARC-8 | NT-01/R-S3 | Sparco | Bell | TMS | Evolve-R

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Old Tue, Aug-06-2013, 12:31:17 AM   #43
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

do the 18x9.5 et35 have the same concave as the et22?
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Old Tue, Aug-06-2013, 04:35:19 PM   #44
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

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Originally Posted by grke36m3 View Post
do the 18x9.5 et35 have the same concave as the et22?
You are correct. All of the concave 18" ARC-8's have the same concavity regardless of width and offset.
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Old Wed, Aug-07-2013, 01:31:13 AM   #45
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How can that be given that a 13 mm difference

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Old Wed, Aug-07-2013, 06:26:32 PM   #46
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

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Originally Posted by grke36m3 View Post
How can that be given that a 13 mm difference

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The offset of a wheel is defined by the distance from the center of the wheel to the mounting pad. Please refer to the following calculator to see how width and offset affect inner and outer clearances:

http://www.e90post.com/forums/forumdisplay.php?f=12

When two wheels have the same width but different offsets, the only change is where the mounting pad is located. This can be done by changing the depth of the mounting pad or the concavity of the face of the wheel. We chose to maintain the same amount of concavity to allow our wheels to fit over many of the big brake kits available on the market. A more concave face would reduce the amount of BBK clearance that we have available. Since the concave face is the same between the two wheels, the 18x9.5" ET22 just has a 13mm deeper weight optimized center pad than the 18x9.5" ET35.

Please let us know if you have any other questions. Thanks!
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Old Wed, Aug-07-2013, 07:19:12 PM   #47
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So basically its the thickness of the mounting pad correct?

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Old Wed, Aug-07-2013, 07:23:16 PM   #48
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

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So basically its the thickness of the mounting pad correct?

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Yes that is correct.
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Old Fri, Aug-09-2013, 11:04:31 PM   #49
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What are the specs on those?

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Old Fri, Aug-09-2013, 11:17:18 PM   #50
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

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What are the specs on those?

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If you are referring to the TiAG e46 M3 just posted, those are 18x10" ET25 squared ARC-8's in Hyper Silver wrapped in 275/35/18 Dunlop Star Specs. Lowered on TC Kline Coilovers with at least -3 degrees of camber in the front.
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Discussing ► APEX | ARC-8 Light Weight Track Wheels in the M3Forum Sponsor Announcements and Specials Forum - Browse this forum to locate any specials our board sponsors may be holding. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)