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      04-04-2013, 09:28 AM   #58
lrcigar
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Drives: 2003 2.5 Roadster
Join Date: Feb 2009
Location: NYC and PA.

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Quote:
Originally Posted by Joe@ApexRaceParts View Post
Either wheel will work great on your Z4 but there are some slight differences between the two wheels that could be a deciding factor. The EC-7 is our newest wheel with a few new sizes that would work really well on your Z4, better than the ARC-8 too. The EC-7 has a little bit better big brake fitment and has a stronger wheel face than the ARC-8 wheel.

The ARC-8 is usually a couple lbs lighter per wheel and has straight spokes compared to the EC-7's curved spokes.

If you were to go with the EC-7's I would suggest an 18x8.5" ET35 front wheel with a 235/40/18 tire and an 18x9.5" ET43 rear wheel with a 265/35/18 rear tire. The 18x9.5" ET43 is a new size to us that is a higher offset 9.5" wheel allowing you to use wider rear tires than with the ARC-8 wheel.

If you were to go with the ARC-8's than I would suggest an 18x8.5" ET38 front wheel with a 235/40/18 tire and an 18x9.5" ET35 rear wheel with a 255/35/18 rear tire. The ARC-8's lower offset limits your rear tire width but the wheels would be lighter overall.

I have a 2003 2.5i non m, and non sport. Already have the ARC-8's 18x8.5" ET38 front, and 18x9" ET42 rear. I have Hankook Ventus V12's 225/40/18 on the front, and 255/35/18 V12's on the rears. Since then I installed HR coilovers and lowered the car. The way it sits now there's no rubbing. I would like to replace the tires with Ventus V12's 235/40/18 front and 265/35/18 rears. In your products detail for non M's it says that the 235/40/18 can be used in the front and 265/35/18 can be used in the rear depending on the tire. Do you think there may be an issue because the car was lowered? The coilovers are adjustable so I can make changes as needed.

thanks
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