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      03-03-2014, 06:20 PM   #1
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► APEX | ARC-8 Light Weight Track Wheels

APEX ARC-8 Wheels

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


APEX ARC-8 in Hyper Silver


Meeting the Performance Enthusiast’s requirements:
Light-weight: 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.

Strength: Track duty requires a wheel that can handle the punishment of high lateral G’s, hitting berms, and every once in a while 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 Japans 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 pot holes 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 hair line 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.

Certification: 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:
17x8.5" ET20 - 16.50lbs - $259
17x8.5" ET40 - 17.20lbs - $249
17x9.0" ET30 - 16.50lbs - $264
17x9.0" ET42 - 17.20lbs - $259
17x9.5" ET35 - 16.95lbs - $269
17x10" ET25 - 18.45lbs - $284
17x10.5" ET27 - 18.95lbs - $299
18x8.5" ET38 - 18.45lbs - $289
18x8.5" ET45 - 18.20lbs - $289
18x9.0" ET42 - 18.65lbs - $299
18x9.5" ET62 - 18.20lbs - $314
18x9.5" ET35 - 18.85lbs - $314
18x9.5" ET22 - 19.20lbs - $314
18x10" ET25 - 19.95lbs - $324
18x10.5" ET27 - 20.45lbs - $344

Available Finishes
  • Hyper Silver
  • Hyper Black
  • Anthracite
  • Satin Black

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.





Please click the images for a higher resolution version.

Ordering and Contact
  • Phone: Call (888) 499-9135 EXT. #1 for phone orders.
  • 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 thru Friday: 9AM to 6PM PST
    Saturday and Sunday: Closed
  • Warehouse and local pickup: The APEX warehouse is at 7888 Marathon Drive, Unit A, Livermore, CA, 94550 (Map It), (888) 499-9135 EXT. #2. This is where you pick up local orders.
  • Service and Installation: Apex Performance Services - Dublin: 6443 Golden Gate Drive, Dublin, CA 94568 (Map It), (888) 499-9135 EXT. #3
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Last edited by David@ApexRaceParts; 08-04-2014 at 10:56 PM.
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      03-04-2014, 06:09 PM   #2
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David.. Got the 17x9 et 30 concaves mounted on my E90. Just for info purposes, what reccomended alignment settings are good for these rims with a 255/40-17 tire for good handling, tire wear and clearance with stock suspension?
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      03-04-2014, 07:14 PM   #3
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Quote:
Originally Posted by TOM1911 View Post
David.. Got the 17x9 et 30 concaves mounted on my E90. Just for info purposes, what reccomended alignment settings are good for these rims with a 255/40-17 tire for good handling, tire wear and clearance with stock suspension?
The 17x9" ET30 with a 255/40/17 street tire would actually work with the OEM alignment specifications, though we do recommend for you to pull the alignment pins to maximize the negative camber in the front with the OEM suspension so that you can gain more fender clearance and the reap the handling benefits of negative camber such as sharper turn in. OEM alignment specifications would be the most ideal for elongating tire wear.
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      03-10-2014, 09:26 PM   #4
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Here's my set up until I can get a proper shoot.
225/40/18 (rolled fronts) 18x9.5 ET 35 and 3mm spacer (+32)
265/35/18 (shaved rears) 18x10.5 ET 27 and 10mm spacer (+17)
On coilovers, fenders are raised just right above the tires.
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      03-11-2014, 04:56 PM   #5
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The car looks great, thank you for sharing with us Route 16. What kind of coilovers are you using?
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      03-22-2014, 10:32 AM   #6
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Quote:
Originally Posted by David@ApexRaceParts View Post
The car looks great, thank you for sharing with us Route 16. What kind of coilovers are you using?
Suspension technique. I was wondering if these and kw1 have fitment issues because the fronts needed at least a 3mm spacer to avoid the wheel hitting the strut at 9.5 ET 35. No issues since.
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      03-24-2014, 02:11 PM   #7
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Quote:
Originally Posted by Route 16 View Post
Suspension technique. I was wondering if these and kw1 have fitment issues because the fronts needed at least a 3mm spacer to avoid the wheel hitting the strut at 9.5 ET 35. No issues since.
We recommend at least a 5mm spacer for the 18x9.5" ET35 wheel to fit on the front of an e9x 3-series regardless of the suspension, as the wider wheel hits the struts with that offset even in stock form. Good to know that the 5mm spacer resolved your issue with your ST coilovers.
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      03-24-2014, 03:17 PM   #8
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Quote:
Originally Posted by David@ApexRaceParts View Post
We recommend at least a 5mm spacer for the 18x9.5" ET35 wheel to fit on the front of an e9x 3-series regardless of the suspension, as the wider wheel hits the struts with that offset even in stock form. Good to know that the 5mm spacer resolved your issue with your ST coilovers.
A 3mm spacer works fine since I'm using that right now.
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      04-29-2014, 02:09 AM   #9
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PM sent with price request.
Thanks!
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      04-29-2014, 05:49 PM   #10
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Originally Posted by dragosdor View Post
PM sent with price request.
Thanks!
PM replied.
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Last edited by David@ApexRaceParts; 05-16-2014 at 05:24 PM.
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      05-07-2014, 02:50 AM   #11
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I have a dilemma...

I have my stock 17" wheels in the garage with brand new BFG G Force Comp 2 235/40/18 tires on them. I like the meat look and now that I have some V3's on the car along with some camber plates I'm curious about a 17" set of ARC 8.

When I see these sick e90s with the beef/meat look (side wall thick) I just love the look. Would the above mentioned tires allow that look in some 17's??

I am currently running some 18x8 and 18x8.5 CSL reps with 235/40/18 and 265/35/18 DW's.

Would I be better off getting 18 ARC 8s and using the DW's or run 17's with my squared BFG 235/40/18??

Torn.... 99% of the time I'm daily driving and enjoy the 18" wheels and staggered look...especially with the 265 rears.

Any advice or opinions would be appreciated. .

Coulple pics....
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      05-07-2014, 02:52 AM   #12
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Sorry if those oics are enormous. I'm on my mobile and realize they may be huge. I can pull then down I'd it is annoying. They look fine on mobile
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      05-07-2014, 05:05 PM   #13
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Quote:
Originally Posted by stashtrey View Post
I have a dilemma...

I have my stock 17" wheels in the garage with brand new BFG G Force Comp 2 235/40/18 tires on them. I like the meat look and now that I have some V3's on the car along with some camber plates I'm curious about a 17" set of ARC 8.

When I see these sick e90s with the beef/meat look (side wall thick) I just love the look. Would the above mentioned tires allow that look in some 17's??

I am currently running some 18x8 and 18x8.5 CSL reps with 235/40/18 and 265/35/18 DW's.

Would I be better off getting 18 ARC 8s and using the DW's or run 17's with my squared BFG 235/40/18??

Torn.... 99% of the time I'm daily driving and enjoy the 18" wheels and staggered look...especially with the 265 rears.

Any advice or opinions would be appreciated. .

Coulple pics....
If you are looking to reuse your tires, the 235/40/17 BFG G Force comp tires can be used with the 17x8.5" ET40 flat faced ARC-8 squared, which would need a spacer in the rear. You can use it with the 17x9 ET30 concave ARC-8 squared as well, but the tires would be a bit undersized and a little stretched on a 9" wide wheel. We usually recommend at least a 245/40/17 on a 9" width.

Your 235/40/18 and 265/35/18 Continental DW's can be used with our ARC-8's in the 18x8.5" ET38 and 18x9.5" ET35, or EC-7's in 18x8.5" ET35 and 18x9.5" ET35. Both of these wheel sets are direct fitment for your e90, and would not require any spacers, nor would the tires be undersized and stretched. If you are looking for the best match for your current tires that you have, this would be the better option of you.
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      05-09-2014, 07:07 PM   #14
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The perfect wheel for your e90, 17x9" ET30 ARC-8's.



Give us a call if you have any questions regarding fitment.
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      05-15-2014, 06:55 PM   #15
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Any word on when the 17x9 et30 hyper black will be in stock
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      05-15-2014, 07:05 PM   #16
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Quote:
Originally Posted by R0oster View Post
Any word on when the 17x9 et30 hyper black will be in stock
We are expecting to restock the Hyper Black 17x9" ET30 ARC-8's at the end of this month or beginning of June.
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      06-03-2014, 09:31 AM   #17
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Can you price out 4x 18x8.5 ET38 shipped to 03076. Thx
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      06-03-2014, 02:44 PM   #18
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pm me for
18*8.5 et 45
18*9.5 et 62

shipped to 11730
thanks
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      06-03-2014, 04:41 PM   #19
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Quote:
Originally Posted by thegrinchboy View Post
Can you price out 4x 18x8.5 ET38 shipped to 03076. Thx
Quote:
Originally Posted by mike082802 View Post
pm me for
18*8.5 et 45
18*9.5 et 62

shipped to 11730
thanks
Absolutely, PM on the way.
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      06-09-2014, 05:50 PM   #20
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Send a message via AIM to uhaulball
awesome looking set of wheels! good to see coming back to e90post after a legit 2 year hiatus that smaller diameters are coming back
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      06-09-2014, 09:38 PM   #21
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message me 18x10 et 25 for the rears and for the fronts do you carry anything close to 18x9 et 25?
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      06-10-2014, 01:15 PM   #22
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Quote:
Originally Posted by uhaulball View Post
awesome looking set of wheels! good to see coming back to e90post after a legit 2 year hiatus that smaller diameters are coming back
Thank you for your support.

Quote:
Originally Posted by MentegoE90 View Post
message me 18x10 et 25 for the rears and for the fronts do you carry anything close to 18x9 et 25?
Sending you a PM. The only 18x9" ARC-8 wheel we carry is in 18x9" ET42, so you'd need an 18mm spacer to get close to the specification you want. We do have the 18x9" ET31 EC-7 available which is a closer fitment to what you desire.
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