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E36 / E30 - Parts for Sale/Wanted Use this section to post parts for sale or wanted that are related to the E36 or E30 only.


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Old Wed, Jul-24-2013, 11:49:57 AM   #11
Racerbox77
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I've read that the concave is just as deep on the 18x9,42mm as it is on the 18x9.5, 35mm. Is that true?

I'd want the most concave I can. I've seen the 9.5's in person on an e36 and it looks like they stick out a tad bit too far for my taste on the front. Also I could use my existing tires with a 9" rim 225/40, 255/35 which would save some $

Thanks

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Old Wed, Jul-24-2013, 05:50:42 PM   #12
David@ApexRaceParts
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

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Originally Posted by Racerbox77 View Post
I've read that the concave is just as deep on the 18x9,42mm as it is on the 18x9.5, 35mm. Is that true?

I'd want the most concave I can. I've seen the 9.5's in person on an e36 and it looks like they stick out a tad bit too far for my taste on the front. Also I could use my existing tires with a 9" rim 225/40, 255/35 which would save some $

Thanks

Sent from me
I'm not sure where you have read that information, but that is false as the 18x9.0" ET42 ARC-8 has a flat face and the 18x9.5" ET35 ARC-8 has a concave face. All of the concave ARC-8's in 18" share the same concavity on the face. Perhaps you heard that the 17x9.0" ET30 shared the same concave face as the 17x9.5" ET35? That would be true.
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Old Thu, Jul-25-2013, 02:24:14 AM   #13
Racerbox77
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So I'd need the 18x9.5 to get the deeper concave? Ok thank you for letting me know.

Maybe the fronts will be fender flush with my camber - 2.5?
And rear camber of - 1.5.

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Old Thu, Jul-25-2013, 05:51:44 PM   #14
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

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Originally Posted by Racerbox77 View Post
So I'd need the 18x9.5 to get the deeper concave? Ok thank you for letting me know.

Maybe the fronts will be fender flush with my camber - 2.5?
And rear camber of - 1.5.

Sent from me
For the 18" diameter wheels, you are correct, you'd need the 18x9.5" ET35 to have the concave face ARC-8. There are also 17" concave ARC-8's available in 17x9.0" ET30 and 17x9.5" ET35 as well.

With the 18x9.5" ET35 in the front, if you do not have any issues with the spring perch or strut of your coilovers, you should be able to clear your fenders with -2.5 degrees of camber using the 245/35/18 street tires. The 255/35/18 street tires can also work but would require a small spacer and at least -3.5 degrees of camber. Make sure that the spring perch is above the wheel and tire so the perch is above the tire. Some coilovers utilize a cone shaped progressive spring or a helper spring which sets the perch and spring next to the tire. When that happens a significantly thicker spacer, sometimes up to 20mm in thickness will be required. If you encounter this clearance issue, you can either use a thick spacer wheel spacer, replace your spring with a shorter spring, remove any applicable helper springs, or raise your ride height if possible.

To use the 18x9.5" ET35 in the rear, with the 245/35/18 street tire size, the rear fenders do need to be heavily rolled but not pulled for this size. The area of contact is the worst where the rear bumper meets the fender so focus on that area with your fender roller the most. Using the 255/35/18 street tire size, the rear fenders still needs to be heavily rolled, and the rear ride height may need to be raised for proper fender clearance.
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Old Wed, Jul-31-2013, 12:33:36 PM   #15
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

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Originally Posted by David@ApexRaceParts View Post
ARC-8's look perfect on the e36 M3! Here is one with 17x9" ET42 squared:



Give us a call if you have any other questions regarding wheel fitment!
Dave,

Looks awesome! Are you guys going to be offering custom finishes any time soon? I have a set of ARC-8 18x9.5 and 8.5, but I'd spring for a new set of 17x9 if I could get them in white (for the track).
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Old Thu, Aug-01-2013, 12:40:04 AM   #16
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

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Dave,

Looks awesome! Are you guys going to be offering custom finishes any time soon? I have a set of ARC-8 18x9.5 and 8.5, but I'd spring for a new set of 17x9 if I could get them in white (for the track).
We do not have any plans of doing any custom finishes at this time, but we will consider that option in the future if we can find a way to refinish the wheels without changing the structural integrity of the wheels.
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Old Wed, Aug-28-2013, 10:25:21 PM   #17
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

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We have seen many aggressive E36 M3 fitments. Here is one featuring our ARC-8's in 17x9.5 ET35 square, 245/40/17 Michelin PSS, and 10mm front and 5mm rear spacers:



If you're going with an aggressive setup or a direct bolt on, give us a call first to make sure you're getting the perfect set for your car.
Does this fitment require coilovers up front or will it clear stockish struts?
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Old Fri, Aug-30-2013, 12:21:58 AM   #18
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

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Originally Posted by enderw88 View Post
Does this fitment require coilovers up front or will it clear stockish struts?
The 17x9.0" ET30 concave wheels will clear the OEM struts, but depending on the size and type of tire you put on them, you may need to dial in a bit negative camber for the wheels and tires to clear the front fenders, which would require the installation of camber plates. Some people go with a staggered setup of 17x9.0" ET30 front and 17x9.5" ET35 rear so that the fronts would not require a spacer to clear the strut that the 17x9.5" ET35 would. Most people use street tires in 245/40/17 sizes to stretch the tires enough for clearance for the fenders.

The 17x9.0" ET30 squared can also be done, but due to the wheel not being as wide, the rears would require a fender pull so that it would clear, since the extra half inch of width on the 17x9.5" ET35 stretches the tire enough to provide a few millimeters of extra clearance. Both concave wheels will require a lot of work in terms of rear fender modifications in order for them to fit as the wheels are very aggressive for an e36 M3. If you are interested in a fitment like this, please consult with us by phone at 925.245.0773 so that we are able to ensure that you are aware of the steps required for this fitment to work.
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Old Thu, Sep-05-2013, 02:29:44 AM   #19
Racerbox77
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Quote:
Originally Posted by David@ApexRaceParts View Post
Estoril Blue E36 M3 stanced on 18x9.5" et35 ARC-8's wrapped in 245/30/18 Hankook V12s. Rear fenders are rolled with 5mm spacers all around to clear the Bilstein PSS9s with -2 degrees of camber all around



Let me know if you have any other questions regarding fitment!
Love this set up. Are you sure that's a 30 series tire? Didn't think they made that size. Maybe a 245/35/18? What color are those rims?

Thanks

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Old Thu, Sep-05-2013, 06:28:11 PM   #20
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

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Originally Posted by Racerbox77 View Post
Love this set up. Are you sure that's a 30 series tire? Didn't think they made that size. Maybe a 245/35/18? What color are those rims?

Thanks

Sent from me
Thanks for catching that, you are correct, the tire size is actually 245/35/18. The owner of the car made a typo when he sent us the specifications of his car, and we didn't realize that tire didn't exist. Original post has been fixed!
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Discussing ► APEX | ARC-8 Light Weight Track Wheels in the E36 / E30 - Parts for Sale/Wanted Forum - Use this section to post parts for sale or wanted that are related to the E36 or E30 only. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)