Proper M Coupe offsets for ARC-8s?

Gladius · 01-21-2014, 10:10 PM

Thinking about the ARC-8s, initially I was told 18x8.5 ET38 front and 18x9.5 ET35 rear, and that I could run up to a 12mm spacer in the rear, but have also been told to go et 22 in the rear. Is this effectively the same thing and would avoid the spacer? Is the et22 less concave?

Gt4 · 01-22-2014, 05:53 AM

Et22 are more concave than et35

David70 · 01-22-2014, 07:15 AM

When I was trying to decide the same thing I found this helpful -

http://www.zpost.com/forums/showthread.php?t=768791

DRedman45 · 01-26-2014, 08:44 AM

I'm running 18x9.5 +35 front and 18x10 +25 rear with my ec7's 245 front and 265 rear Dunlop z2's and I am pretty low, and no issue fitting

pokeybritches · 01-28-2014, 08:11 PM

Go with the 9.5ET22 rear. I have the 9.5ET35 with 12mm spacer because the ET22 wasn't available back then.

Expert@ApexWheels · 01-28-2014, 08:28 PM

The direct fitment on the Z4M would be the 18x8.5" ET38 and 18x9.5" ET22 ARC-8's. Both the 18x9.5" ET35 and the 18x9.5" ET22 have the same concave face, but the 18x9.5" ET22 fitment would allow you to have a spacer free rear fitment that is more flush to the fenders.

01-21-2014, 10:10 PM	#1
Gladius Two Wheels or Four? 93 Rep 655 Posts Drives: '18 Perf Edition m240i Join Date: Mar 2007 Location: Colorado iTrader: (1)	Proper M Coupe offsets for ARC-8s? Thinking about the ARC-8s, initially I was told 18x8.5 ET38 front and 18x9.5 ET35 rear, and that I could run up to a 12mm spacer in the rear, but have also been told to go et 22 in the rear. Is this effectively the same thing and would avoid the spacer? Is the et22 less concave? __________________ Current: '18 AW Performance Edition m240i Gone: '15 Mineral Grey m235i \|\| '07 Silver Grey M Coupe \|\| '11 Space Grey 328i XDrive \|\| '08 SparkG M3 \|\| '01 LSB M3 \|\| '01 TiAg 330ci
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01-22-2014, 05:53 AM	#2
Gt4 Captain 54 Rep 880 Posts Drives: 2006 E46 M3 Estoril blue 6mt Join Date: Jan 2012 Location: Montreal iTrader: (5)	Et22 are more concave than et35
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01-22-2014, 07:15 AM	#3
David70 Colonel 1567 Rep 2,665 Posts Drives: 06 Z4M Coupe - 13 Cadillac ATS Join Date: Apr 2012 Location: Cincinnati, OH iTrader: (1)	When I was trying to decide the same thing I found this helpful - http://www.zpost.com/forums/showthread.php?t=768791 __________________ 2006 Z4M Coupe - Stromung exhaust, ZHP knob, stubby antenna, clutch delay delete
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01-26-2014, 08:44 AM	#4
DRedman45 Lieutenant 35 Rep 441 Posts Drives: E86 //M coupe Join Date: Oct 2012 Location: Northern va iTrader: (0)	I'm running 18x9.5 +35 front and 18x10 +25 rear with my ec7's 245 front and 265 rear Dunlop z2's and I am pretty low, and no issue fitting __________________ 2007 //M Coupe. BSM. Fabspeed headers. Catless. BMS x-pipe. Strömung cans. evolve tune. Turner CSL airbox. Airrex air suspension with autopilot v2 management. My Build Thread
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01-28-2014, 08:11 PM	#5
pokeybritches Colonel 479 Rep 2,782 Posts Drives: ESS/G-Power Z4M, VF Z4, 996tt Join Date: Sep 2009 Location: Los Angeles iTrader: (12) Garage List 2006 BMW Z4M [10.00] 2006 BMW Z4M [8.50] 2003 BMW Z4 3.0i [9.00]	Go with the 9.5ET22 rear. I have the 9.5ET35 with 12mm spacer because the ET22 wasn't available back then. __________________ VF Engineering Z4 3.0i, ESS Z4M, G-Power Z4M, 996 Turbo
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01-28-2014, 08:28 PM	#6
Expert@ApexWheels Major General 3511 Rep 6,731 Posts Drives: M3 Join Date: Jun 2012 Location: Bay Area iTrader: (0)	The direct fitment on the Z4M would be the 18x8.5" ET38 and 18x9.5" ET22 ARC-8's. Both the 18x9.5" ET35 and the 18x9.5" ET22 have the same concave face, but the 18x9.5" ET22 fitment would allow you to have a spacer free rear fitment that is more flush to the fenders. __________________ 925-245-0773 /// info@apexraceparts.com Wheels /// Accessories /// Vehicle-Specific Fitment Guides /// Careers
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