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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 Thu, Oct-18-2012, 09:59:08 PM   #1
David@ApexRaceParts
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Default ► APEX | ARC-8 Light Weight Track Wheels





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 5PM PST
  • Shipping: All orders are shipped directly from us via UPS.

Last edited by David@ApexRaceParts; Tue, Jul-16-2019 at 11:13:11 PM.
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Old Thu, Oct-18-2012, 10:45:56 PM   #2
PrittyM3
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

Quote:
Originally Posted by David@ApexRaceParts View Post
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.
Does the 2 year structural Warranty cover bends? I just ordered a replacement wheel for a bent one that i have. Should that be covered by you guys?
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Old Thu, Oct-18-2012, 11:18:32 PM   #3
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

Quote:
Originally Posted by PrittyM3 View Post
Does the 2 year structural Warranty cover bends? I just ordered a replacement wheel for a bent one that i have. Should that be covered by you guys?
Unfortunately, the 2 year structural Warranty does not cover wheel bends. No wheel company warrants wheel bends since bends are not caused by defects in the wheel, but rather by exceeding the wheel's limitations such as hitting potholes, berms on track, going off the track, or even through a car accident.

We are setting up a program to address the replacement needs of track day/ HPDE participants & grass roots racers. This will be completed in the near future. The program goes above and beyond current wheel warranties and helps offset the cost of wheels that need replacement caused by the occasional damage found on the street and track.

Your wheel is on its way out today!
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Old Wed, Nov-07-2012, 07:42:37 AM   #4
regan
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

Can you run 17 x 9 et.42 (front) & 17 x 9 et.30 (rear) on an e36 M3?

With the above wheel setup, can you run 245/40's square?
What camber settings front a rear are needed?
How many mm spacer do you need up front to clear KW-V3's?
Is a lot of fender work involved with this setup?
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Old Wed, Nov-07-2012, 10:18:26 PM   #5
David@ApexRaceParts
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

Quote:
Originally Posted by regan View Post
Can you run 17 x 9 et.42 (front) & 17 x 9 et.30 (rear) on an e36 M3?

With the above wheel setup, can you run 245/40's square?
What camber settings front a rear are needed?
How many mm spacer do you need up front to clear KW-V3's?
Is a lot of fender work involved with this setup?
You can surely run the 17x9.0" ET42 in the front with at least a 12mm spacer for them to clear your KW V3s so that the wheel and tire clears the spring perch. This effectively makes them the same offset as the 17x9.0" ET30 in the rear, so the 17x9.0" ET30 squared is also a possibility if you prefer the concave look all around. The fronts would require at least -1.5 degrees of camber for the 245/40/17 to clear, and the rears would require a heavy fender roll so that the rears don't rub.
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Old Tue, Nov-13-2012, 11:39:52 PM   #6
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

Hyper Silver ARC-8s on this E36 M3:



Feel free to give us a call if you have any questions about fitments!
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Old Wed, Nov-14-2012, 04:12:02 AM   #7
///dean
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

Quote:
Originally Posted by David@ApexRaceParts View Post
Hyper Silver ARC-8s on this E36 M3:



Feel free to give us a call if you have any questions about fitments!
Wheel/tire specs please. That looks awesome in 18's I'm assuming.
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Old Wed, Nov-14-2012, 04:39:59 AM   #8
regan
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

Quote:
Originally Posted by David@ApexRaceParts View Post
Hyper Silver ARC-8s on this E36 M3:



Feel free to give us a call if you have any questions about fitments!
Can you guys always "list" the specs of the wheels? It would help in determining which size and offset to go with. Thanks!!!
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Old Wed, Nov-14-2012, 04:06:24 PM   #9
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

Quote:
Originally Posted by David@ApexRaceParts View Post
You can surely run the 17x9.0" ET42 in the front with at least a 12mm spacer for them to clear your KW V3s so that the wheel and tire clears the spring perch. This effectively makes them the same offset as the 17x9.0" ET30 in the rear, so the 17x9.0" ET30 squared is also a possibility if you prefer the concave look all around. The fronts would require at least -1.5 degrees of camber for the 245/40/17 to clear, and the rears would require a heavy fender roll so that the rears don't rub.
I'm thinking about putting on 8.5s with my 245/40 inch rubber too, except with bilsteins
It seems that 9 inch is more optimal. Would he still need to roll the fenders if he had the 42 offset in the back as well and the 30 offset in the front to fit 9 inches wide all around?
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Last edited by 200kclub; Wed, Nov-14-2012 at 06:26:23 PM.
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Old Wed, Nov-14-2012, 07:56:11 PM   #10
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Default Re: ► APEX | ARC-8 Light Weight Track Wheels

Quote:
Originally Posted by ///dean View Post
Wheel/tire specs please. That looks awesome in 18's I'm assuming.
Those would be the ARC-8s in 18x8.5" ET38 and 18x9.5" ET35 with 235/40/18 and 245/35/18. The rear fenders were rolled quite heavily for the tires to not rub onto the fender.

Quote:
Originally Posted by 200kclub View Post
I'm thinking about putting on 8.5s with my 245/40 inch rubber too, except with bilsteins
It seems that 9 inch is more optimal. Would he still need to roll the fenders if he had the 42 offset in the back as well and the 30 offset in the front to fit 9 inches wide all around?
For the 17x9.0" ET42 to fit the 245/40/17 tires in the rear, you would still need a fender roll for the tires to clear. The 17x9.0" ET30 in front would need would need at least -2 degrees of camber. However, going with this setup, you'd have a concave face front and flat face rear wheel. You can go with the 17x9.0" ET42 all around with a spacer in the front instead for a more uniform look.
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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)