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Thread: ► APEX | ARC-8 Light Weight Track Wheels

  1. #1
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    ► 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 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 Eddy@ApexRaceParts; 09-29-2017 at 06:42 PM.

  2. #2
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    Feel free to give us a call with any questions regarding fitment or availability.

  3. #3
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    Need help deciding on wheel and tire sizes? Use our Fitment Recommendation form and we'll help you find the perfect setup based on your needs!


  4. #4
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    Check out this E92 M3 with 19x10 ET25 ARC-8 wheels all around.


  5. #5
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    Here are some 17x10" ET25 ARC-8 wheels all around with meaty 275/40/17 tires.

    Give us a call or PM if you have any questions about what fits your car.


  6. #6
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    Check out the concavity of these 18x9.5" ET35 ARC-8 wheels with 255/35/18 tires on a 330i sedan. A heavy fender roll in the rear was required to fit this setup.


  7. #7
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    Here are some 17x9.5" ET35 ARC-8 wheels doing their thing.


  8. #8
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    Concave ARC-8 wheels on an M roadster are a real treat. This setup consists of 18x9.5" ET35 up front and 18x10" ET25 in the rear.


  9. #9
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    We love the functional look of these 18x9.5" ET35 ARC-8 wheels.


  10. #10
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    TIRES NOW AVAILABLE

    • Michelin Pilot Super Sport
    • Michelin Pilot Sport 4S
    • BF Goodrich g-Force Rival S
    • BF Goodrich g-Force Rival S 1.5
    • BF Goodrich g-Force R1S

    View Complete Tire Selection

    Add tires to your ARC-8 wheels with free in-house professional mounting, balancing, and quality control inspection. Check out our tire selection and feel free to contact us for a recommendation.


  11. #11
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    Strong, light, affordable. Choose three.


  12. #12
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    Now available due to popular demand, red APEX centercaps! Use this link to check them out and place a pre-order.


  13. #13
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    Hey, what are the specs on this setup? Looks amazing IMO.
    '92 325is 5-Spd, Mauritius Blue, 135k - R.I.P.
    '94 325is 5-Spd, Jet Black, 224k - Sold
    '98 M3 5-Spd, Estoril Blue, 235k - Current

  14. #14
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    Quote Originally Posted by Remer77 View Post
    Hey, what are the specs on this setup? Looks amazing IMO.
    Which setup are you referring to?

    - Max

  15. #15
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    Quote Originally Posted by Eddy@ApexRaceParts View Post
    Which setup are you referring to?

    - Max
    Hey Max, sorry I was referring to the Estoril E36 M3. Didn't realize the initial post didn't get attached.
    '92 325is 5-Spd, Mauritius Blue, 135k - R.I.P.
    '94 325is 5-Spd, Jet Black, 224k - Sold
    '98 M3 5-Spd, Estoril Blue, 235k - Current

  16. #16
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    Quote Originally Posted by Remer77 View Post
    Hey Max, sorry I was referring to the Estoril E36 M3. Didn't realize the initial post didn't get attached.
    It looks like those are the 17x9 ET30 concave wheels. I have the ET42 versions because it's easier to get them to fit on an E36, and you can fit wider tires on them. The ET30's require a fender roll (and likely some ride height adjustment) to fit in the rear with a 245 tire. They do look nice though.
    1999 M3/2/5 - Titanium Silver - Daily Driver and Track Toy


  17. #17
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    Quote Originally Posted by TostitoBandito View Post
    It looks like those are the 17x9 ET30 concave wheels. I have the ET42 versions because it's easier to get them to fit on an E36, and you can fit wider tires on them. The ET30's require a fender roll (and likely some ride height adjustment) to fit in the rear with a 245 tire. They do look nice though.
    No worries! That car was actually featured on our blog which I will link to below if you are interested in specifics on this build.

    CHANDLERíS ESTORIL BLUE E36 M3 WITH ARC-8 WHEELS

    The car is running our 17x9 ET30 ARC-8 wheels with a 245/40-17 on all four corners. No spacers required for this fitment, but you will need to roll your rear fenders in order to clear this fitment.

    I hope this helps!

    - Max

  18. #18
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    Check out this solid staggered fitment:

    Front:
    APEX 18x9.5" ET22 ARC-8 Wheels
    265/35/18 Yokohama AD08R Tires

    Rear:
    APEX 18x10.5" ET27 ARC-8 Wheels
    295/30/18 Yokohama AD08R Tires

    Owner: @jezz33 on IG


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