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      03-03-2014, 06:20 PM   #1
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APEX ARC-8 Wheels

We are proud to continue offering our timeless ARC-8 wheel. This new wheel addresses the concerns of more and more racers and track day enthusiasts: long term durability, fitment, and performance. With the increase of faster and heavier cars being used in racing, HPDEs, and spirited driving, the ARC-8 was designed and engineered to handle extreme abuse on track and street, offer a wide range of direct fitments, while still producing a lightweight wheel.

Visit our website to order

The Good Stuff




1. They Fit Everything
The ARC-8's wide range of widths, diameters, offsets and face profiles result in 26 unique BMW fitments ranging from 8.5" to 10.5" wide. Each wheel combines these features to meet the different brake caliper, strut, and fender clearance needs of each BMW model.

2. Factory Support
Like all our APEX wheels, The ARC-8 supports all OEM hardware like OEM Roundel center caps, wheel lugs, valve stems, and TPMS sensors. No centering rings are needed either, as all of our 5x120 BMW wheels use a 72.56mm center bore.

3. Brake Clearance
ARC-8 wheels properly clear all OEM brake calipers. Our wheels are targeted at the serious performance-minded owner. The spokes of the flatter faced ARC-8 were designed to clear big brake kits, making it a better choice for BBK equipped cars. The concave version of the wheel is the best option for cars with factory brake calipers.

4. Concavity
The ARC-8 wheel is available in two unique face profiles. The shallower face provides increased caliper clearance on narrow applications, while the deeper concave face reduces weight and creates a stunningly aggressive appearance on low offset and wide width applications. These two face profiles are available in all 17", 18" and 19" diameters.

Designed for the Performance Enthusiast

Light-weight
Flow-forming allows for a significant reduction in rotational mass by reducing barrel weight. This manufacturing technique allows our wheels 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. We design our spoke dimensions to help 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.

Chassis-Specific Fitments
Stretched rubber, narrow tires, and fender rubbing are not elements to look for in a competitive wheel/tire setup. All of our 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 Fitment Options
Most BMWs come with a staggered setup from the factory. 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 and consideration of tire costs. Most BMW chassis benefit from being able to fit both square and staggered setups with relative ease. 9.5” or 10”-wide 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 models for track use due to the significant increase in front grip and turn-in response. Some 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. Wheels up to 10.5" wide are available for rear fitment. These can be combined with 9” or 9.5” fronts for a bolt-on spacer-free staggered setup.

Open-Hub Center
Race wheels can't just be light, they need to function in a high performance environment. Unlike the narrow lug recesses of most other wheels, the ARC-8 wheel boasts a completely wide-open design that easily fits over-sized race lugs and beefy impact sockets. This allows for quick and easy wheel changes at the track, and as a bonus prevents chips and scratches from tools for those just running these wheels on the street.


The APEX Standard



1. FEA Optimization
Various design features were implemented to ensure that the ARC-8 wheel design was as light and durable as possible. We began with a strong one-piece design featuring an open hub center and reliefs in the mounting pad to remove weight between lug holes. The design was then run through Finite Element Analysis (FEA) to further optimize the spoke and barrel design. The result is a light weight wheel with extra strength in all the right places, while keeping weight to a minimum.

2. Always Flow Formed
All APEX wheels feature Flow-Formed construction tha utilizes rotary forging to produce a strong and lightweight barrel. The ARC-8 is no exception.

3. True JWL & VIA Certification
Strength needs to be certified. Our wheels were not simply FEA tested in a computer simulation, or in-house tested to an unregulated standard. We conduct real-world crush-testing and all of our wheels conform to Japan’s JWL standard, as well as being 3rd-party tested by the VIA. All of our wheels carry a 690KG load rating.


Available Finishes


Note: Not all sizes are available in all finishes.

Face Profiles



Sizes, Weights, and Pricing


17" Sizes
18" Sizes
19" Sizes

Questions about tires, fenders, brakes, spacers, or suspension clearances?
Click here to get a personalized fitment recommendation from one of our experts.



On-Car Photos



Shown above: E46 M3 with 18x9.5 ET35 and 18x10.5 ET27 with 245/40/18 and 275/35/18 tires.


Shown above: E90 M3 with 17x10 ET25 with 275/40/17 tires all around.


Shown above: E92 M3 with 18x10.5 ET27 with 285/30/18 tires all around.

Check out our extensive collection of photos on our Flickr page. See more ARC-8 photos >>>

Tire Mounting and Balancing Service




Popular street and track tires are now available when you order APEX wheels. Add tires with your wheel order and get free tire mounting and balancing by our trusted enthusiast technicians. We use high-end, touchless equipment and inspect every wheel and tire combo thoroughly before they leave our warehouse. With our competitive tire pricing bundled with the savings of free mounting and balancing and convenience, it’s the ultimate wheel & tire package.

*Note: Tires will only ship mounted to the wheels in your order, and can not be sold separately. Tires and wheels must be purchased in the same transaction. Tire-only orders will be cancelled and refunded.

Available Tire Brands:

Ordering and Contact Information
  • Hours: Monday - Friday, 9AM to 6PM PST
  • Shipping: All orders are shipped directly from us via UPS. Local pickup also available at our Livermore, CA Warehouse. (Map It)

Last edited by Expert@ApexRaceParts; 09-29-2017 at 06:18 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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Quote:
Originally Posted by dragosdor View Post
PM sent with price request.
Thanks!
PM replied.

Last edited by Expert@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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      05-15-2014, 06:55 PM   #14
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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   #15
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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   #16
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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   #17
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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   #18
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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   #19
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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   #20
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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   #21
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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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      06-12-2014, 02:23 AM   #22
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What do you think about 255/35/18 on the 18x8.5 rim? I know that's oe size but I want to run them in the fronts.
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