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-   -   APEX | ARC-8 Light Weight Track Wheels (http://forum.e46fanatics.com/showthread.php?t=951176)

David@ApexRaceParts 10-18-2012 02:41 PM

APEX | ARC-8 Light Weight Track Wheels

APEX ARC-8 wheels were designed to meet the specification needs of HPDE, race, and autocross drivers, while exceeding the requirements for everyday street use. This makes them the perfect cost effective, dual duty wheel.

APEX ARC-8 in Hyper Silver, Profile 3

Meeting the Performance Enthusiast's requirements:

Flow-forming allows for a significant reduction in rotational mass by reducing barrel weight. This manufacturing technique allows the ARC-8 wheel to be almost as light as a traditional forged wheel, but without the significant increase in price.

Track duty requires a wheel that can handle the punishment of high lateral G's, hitting berms, and every once in awhile a small off track excursion. Spoke and barrel design are a major factor in wheel strength. The flow-forming technique uses high pressure disks/rollers to roll the wheel's barrel into its final shape. This gives the barrel the same strength properties as a forged wheel, since monoblock wheels go through a similar step to form their barrels. The ARC-8's mesh design helps evenly distribute loads from the barrel to the center of the wheel. The lack of a front lip, and spokes directly connecting to the edge of the wheel, also add increased strength to the outer lip of the wheel. Although a front lip can reduce weight, it can also make the wheel much more prone to bending, and this was an important factor when developing the wheel.

Once a design is selected, it needs to be tested and certified for strength. The ARC-8 wheels were not just FEA tested in a computer simulation, or in house tested to an unregulated standard. They follow Japan's JWL standard, and are 3rd party tested there by the VIA in Japan. All 18" ARC-8 wheels have a 690KG load rating.

Proper tire fitment:
Stretched rubber, narrow tires, and fender rubbing are not elements to look for in a competitive wheel/tire setup. The ARC-8 wheels were designed with offsets that allow for proper fitment of extreme summer, and r-compound tires without the need for spacers or fender rolling. This means keeping the tire under the fender, and away from suspension components. Track oriented wheel widths are also important as they provide proper sidewall support under hard cornering. Too much rubber for a wheel results in excessive sidewall deflection, which translates into sloppy and delayed turning response.

Multiple fitments:
Most BMW's come with a staggered setup. Some choose to keep their car this way, while others like to switch out for an easy to rotate, square/neutral setup. This is generally based on driver's preference in addition to costs. The E46 M3 benefits from being able to fit both square and staggered setups with relative ease. 9.5" or 10" square setups are great for budget minded enthusiasts who want to extend their tires life by rotating between events, in addition to preferring the feel of a square setup. Square setups are popular on all 3 series models for track use due to the significant increase in front grip and turn in response. Some E46 M3 owners comment that due to the extra power of their cars, a square setup will lean towards oversteer. For those who prefer more rubber in the rear, a staggered setup is the way to go. 10" and 10.5" wheels are available for rear fitment. These can be combined with 9.5" or 10" fronts for a bolt-on spacer free staggered setup.

BBK clearance:
Many owners install Big Brake kits on their cars. Having an 18" wheel that can clear large calipers is a must. Due to the low offset nature of the E46 M3, there are no clearance issues with the concave spokes of the ARC-8 wheel. Barrel clearance was increased during the design phase to accommodate StopTech's 380mm kit. The only kit that poses an issue at this time is the 380mm Brembo setup.

Meeting the needs of Daily/Street use:

Aesthetic design:
Although the ARC-8 put function over form when meeting the above requirements, there is no denying that concave mesh wheels look at home on a BMW.

Paint finishes:
All the wheel have a multi-coat painted finish including a full clear coat except for the Satin finish which does not have a clear (that would have made it gloss black). To give owners more options the wheels are offered in 4 different finishes. Hyper Silver, Hyper Black, Anthracite, and Satin Black. Not everyone wants their track day wheels to be grey.

Abuse of street use:
The world is full of potholes and random things to run over. APEX wheels have an excellent history of handling abuse. To date we've only had one wheel with a minor bend and another with a hairline crack on the inner barrel lip. Both these wheels came from the same dedicated race car, and the bent wheel is still out there racing today.

Multiple fitments:
Due to the more conservative nature of street use, the ARC-8 wheel is also available in sizes that can fit more street oriented rubber, at offsets that are an easier fit. Wider more aggressive wheels can be used by those who like a more flush/filled out look. The choice is yours.

The race track has no wheel strength requirements, but the street does. Sadly the USA has very lenient/minimal regulations of wheel strength, unlike like Japan and Germany. APEX wheels are independently tested by the Vehicle Inspection Association of Japan (VIA) to the JWL standard. Wheels tested to the JWL standard require all wheels on the road to meet specific load rating requirements based on the bolt pattern, and dimensions of the wheel, the application/vehicle model has nothing to do with it. In comparison, wheels tested to the SAE standard in the USA can pick their own load rating, which can be as low as they want. This defeats the purpose of the test, as a wheel manufacturer can choose to underrate their wheels in order to reduce wheel weight. Wheels claiming JWL testing, but no 3rd party verification are prone to certifying untested/unproven wheels. VIA certification can not be done in house. It requires sending wheels/tires to japan for crush testing. Sadly a large number of vendors claim their wheels are VIA, JWL and even TUV certified, when in fact they were never tested by those organizations at all, and in some cases don't even meet the standard requirements of those tests. For this reason the certificate numbers for the ARC-8 wheels have been listed below. Self regulate the market, and ask all vendors to back up their claims. If they were tested, then they'll have the registration numbers.

Available Sizes, Weights, and Pricing:

Available Finishes*
  • Hyper Silver
  • Hyper Black
  • Anthracite
  • Satin Black
  • Matte Bronze
*Not all finishes are available for each wheel size.

Profile 1 Face

Profile 3 Face

Warranty Summary:
2 year Structural, 1 year limited finish warranty guarantees wheels will be free from defects in materials, workmanship and paint finish under normal and reasonable use. Get more details here.

View On-Car Galleries
Product images are nice but we know what you really want to see, photos of our wheels on actual cars. You can check out our extensive collection of photos on our Flickr page here, or we also have a Showroom Gallery on this forum here.

Ordering and Contact Information
  • Phone: (888) 499-9135
  • Payment: Credit and Debit Cards: Visa, Mastercard, AMEX, Discover, PayPal. Bank Wire Transfers are also available. Contact us to use a wire transfer for payment on your order.
  • Tax: California customers will be charged 8.75% CA sales tax.
  • Shipping: APEX ships all orders with UPS.
  • APEX Hours: Monday - Friday, 9AM to 6PM PST, Closed Saturday & Sunday
  • Warehouse and local pickup: The APEX warehouse is at 7888 Marathon Drive, Unit A, Livermore, CA, 94550 (Map It)

Joe@ApexRaceParts 10-19-2012 06:32 PM

ARC-8's look great on this modified E46! He is using our 18x9" ET42 Satin Black wheels with 245/40/18 tires.


Please call, email, or pm us with any question you may have.

Joe@ApexRaceParts 10-26-2012 12:43 PM

17"-18" ARC-8's make for a great street or track wheel. We have many fitments and finishes in stock for your E46!


Please call, email, or pm us with any questions you may have.

Joe@ApexRaceParts 11-05-2012 06:45 PM

ARC-8's are in stock for your E46 in a variety of fitments that can be catered to you depending on your modifications and intended uses. This car is using our 17x9" ET42 wheels square with 245/40/17 Dunlop Star Spec tires.


Please call, email, or pm us with any questions you may have.

Joe@ApexRaceParts 11-07-2012 05:50 PM

ARC-8's are in stock for your E46 3 series in multiple 17" and 18" wheel fitments!


Please call, pm, or email us with any questions you may have.

Joe@ApexRaceParts 11-13-2012 05:19 PM

ARC-8's are in stock for your E46 and E46 M3! This car is using our 18x9.5" ET22 and 18x10" ET25 ARC-8's in Hyper Silver.


Please call, pm, or email us with any questions you may have.

Gheybe 07-31-2013 06:49 PM

Would you guys be able to refinish my wheels?

David@ApexRaceParts 08-01-2013 12:31 PM


Originally Posted by Gheybe (Post 15611170)
Would you guys be able to refinish my wheels?

We do not offer any refinishing services at this time unfortunately. We have had customers take wheels to a local paint shop to get them refinished in the past to custom colors, perhaps that could be an option for you?

AudiEtr 12-01-2013 08:10 PM

The ARC-8's are only 16lbs in 17x9.5 et35?
Ordering a set tomorrow!

Edit: Ordered!!! Ship out Wed!
Ordered a fresh set of pilot sports to wrap them with too!

bimmernate 12-01-2013 10:07 PM

I'll go ahead and post a pic of my setup here since I love the wheels so much.


David@ApexRaceParts 07-07-2014 06:47 PM

Silver Grey E46 M3 Hyper Silver 18x9.5" ET35 squared setup with 12mm spacer in the rear, using 265/35/18 Hankook R-S3 tires. The most popular track fitment for the E46 M3!


Feel free to give us a call if you have any questions regarding fitment or availability.

Vas 09-30-2014 03:47 PM

Any more pics of that Imola Sedan?

APEXraceparts 05-11-2015 11:21 AM

Another shot of the Valley Motorwerks E46 running 17x9" square ARC-8's.


Give us a call, we would be happy to walk you through street or track fitments that are available for your BMW.

APEXraceparts 05-15-2015 12:13 PM


Originally Posted by bimmernate (Post 15864038)
I'll go ahead and post a pic of my setup here since I love the wheels so much.


Looks fantastic Nate :clap: We are happy to hear that your are enjoying them!

APEXraceparts 05-28-2015 11:39 PM

Restock Alert!
We have thousands of wheels arriving in the next 30 days, including the following fitments for the E46 M3 and Non-M:
  • ARC-8 17x8.5" ET40
  • ARC-8 17x9.5" ET42
  • ARC-8 18x8.5" ET38
  • ARC-8 18x9.5" ET22
  • ARC-8 18x9.5" ET35
  • ARC-8 18x10" ET25
  • ARC-8 19x8.5" ET35
  • ARC-8 19x9.5" ET22
  • ARC-8 19x9.5" ET35
  • ARC-8 19x10" ET25
  • ARC-8 19x10.5" ET27

Contact us today to secure your set!

APEXraceparts 06-26-2015 12:03 PM

For more information and pricing give us a call.

Luda 07-14-2015 11:27 PM


Originally Posted by APEXraceparts (Post 16660211)
Check out this red E46 on 18x9" square ARC-8's in Hyper Silver:


Please feel free to contact us for any information you may need!

I'm looking to do this setup for my 330i. What brand/kind tires and tire sizes are used in this setup?

David@ApexRaceParts 07-15-2015 05:15 PM


Originally Posted by Luda (Post 16694278)
I'm looking to do this setup for my 330i. What brand/kind tires and tire sizes are used in this setup?

The tires used on that car is the Dunlop Direzza Star Specs in the 255/35/18 tire size on the 18x9" ET42 ARC-8's with a 5mm spacer in the front for strut clearance. Feel free to give us a call at 925.245.0773 if you have any specific questions regarding this fitment.

///Dreamer 07-15-2015 05:24 PM

We're is the BMW hub cap? Does that come with the purchase or just use our own also do you guys ship to the UK thanks mates :D

Sent from my SCH-I545 using Tapatalk

APEXraceparts 08-06-2015 05:56 PM


Originally Posted by ///Dreamer (Post 16695196)
We're is the BMW hub cap? Does that come with the purchase or just use our own also do you guys ship to the UK thanks mates :D

Sent from my SCH-I545 using Tapatalk

We include our own APEX center caps (pictured below) with the purchase of our wheels. If the customer would like some OEM roundel center caps and do not already have some, they can purchase those through our site as well. :) Shipping to the UK is no problem!

Check out these custom guards red APEX ARC-8's! :thumbsup:


Please contact us with any questions that you may have, we have wheel experts ready for your calls, emails & PM's.

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