Back by popular demand, we are happy to announce our mid-season group buy. Our 17” wheels are designed to be strong, lightweight, functional and an excellent option for improving the look and performance of your car.
This deal allows enthusiasts around the world to “Gang Up” for a chance to receive the largest discount offered on our 17” wheels. The more enthusiasts that pledge, the greater the discount will be. With the ability to set a required discount, there is no risk in signing up, as orders will only be processed if we unlock your discount level.
Whether you are looking for a functional track setup or a lightweight street setup, this Group Buy is the way to save on our 17” ARC-8 wheels.
We’ve done countless hours of test-fitting to come up with the perfect chassis-specific widths and offsets. Whether you’re looking for a clean and conservative OEM+ fitment or an all-out aggressive track/race setup, we’ve got you covered. Check out our guides below.
|9/25/2018 11:50PM Pacific||48 hours after lock||Early October 2018|
Each finish is available in the sizes listed below.
|Hyper Silver||Hyper Black||Anthracite||Satin Black||Matte Bronze|
|17x8.5" ET40||17x8.5" ET40||17x8.5" ET40||17x8.5" ET40|
|17x9" ET30||17x9" ET30||17x9" ET30||17x9" ET30|
|17x9" ET42||17x9" ET42||17x9" ET42||17x9" ET42||17x9" ET42|
|17x9.5" ET35||17x9.5" ET35||17x9.5" ET35||17x9.5" ET35|
|Profile 1||Profile 3|
|Diameter||Bolt Pattern||Center Bore|
The right solution for every application
The concave 17” wheels are for those looking for one of the lightest and strongest wheels that can be utilized in many applications such as a very flush fitment on a stock body E36 or E46 and a track day fitment for the E9X non-M. If you’re looking for low offset 17” wheels, these deep concave ARC-8 wheels are perfect for you.
One design, many levels of beauty
The ARC-8 wheels available in this Group Buy feature our deepest, most concave face profile. The shape of the concave spokes were specifically designed to all for the deepest concavity while clearing OEM brake calipers.
More than just a pretty face
The spokes of the ARC-8 were designed to be robust where they need to be, and extra lightweight where they should be. In each iteration of our ARC-8 design, the split "Y" spokes are carefully evaluated from structural aspects to ensure light weight and remarkable strength. The lack of a deep front lip, but instead spokes that connect directly to the barrel's lip, creates a rigid wheel with incredibly even load distribution. These features help reduce one of the most common concerns with aftermarket wheels — bending. Beauty follows function with this extremely popular and timeless design.
Form follows function
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 features a wide open hub center that easily accommodate over-sized race lugs and beefy impact sockets. This allows for quick and easy wheel changes and prevents chips and scratches from tools.
Spokes that work for you
APEX wheels properly clear all OEM brake calipers. Our wheels are targeted at the serious performance-minded owner. The spokes of the ARC-8 clear Big Brake Kits on newer model BMW’s. Older models such as the E36, E46, Z3, Z4 will require a spacer to clear aftermarket calipers. These spacers can range from 5-20mm depending on the application, which usually results in an unacceptably aggressive fitment. These wheels are best for owners with stock brakes or newer models such as the E9X and F3X. Ask our experts by using the discussion tab if you would like us to confirm your specific fitment.
A lot of room in a tight space
Spoke clearance is only half the problem. The barrel opening on a wheel also needs to be big enough to clear the sides of your caliper and rotor. Many wheels on the market have aesthetic compromises in their design that consumers don’t even know result in major negative impacts on barrel clearance. Those wheels may work with smaller stock brakes, or smaller diameter big brake kits, but the larger kits will pose a major problem. The concave 17” ARC-8 has some of the best barrel-side BBK clearance, easily fitting most aftermarket 355mm kits. Ask our experts by using the discussion tab if you would like us to confirm your specific fitment.
Benefits of forging, without the pain
All APEX wheels, including the ARC-8 wheel, are produced using the Flow-Forming technique. This process significantly reduces weight in the barrel, which has the greatest impact on rotational mass. During the manufacturing process, rollers apply high pressure to the inner barrel, compressing the aluminum into it's final shape. This effectively eliminates porosity and aligns the grain structure of the metal, which increases tensile strength. The end result of the Flow-Forming process is a lightweight and extremely strong barrel that equals that of a traditional forged wheel at a fraction of the cost.
No rings or adapters here
All APEX ARC-8 wheels are purpose built for select vehicle applications, and centering rings are never required for any BMW application. All 5x120mm bolt pattern wheels feature a direct-fit, 72.56mm center bore.
A factory fit and finish
We don't reuse one cap design for all of our wheels. Every ARC-8 wheel is designed to work with factory center caps. You can easily replace APEX center caps with OEM BMW roundels for a clean factory look. The ARC-8 wheels will ship with our redesigned Gloss Black center cap that mimics the size and shape of a BMW factory center cap.
Original or Aftermarket, it all works
The ARC-8 wheel can be used with all OEM and aftermarket mounting hardware with a 60° tapered seat. Lug bolts, wheel locks, and stud conversion kits all work perfectly. The ARC-8 wheel also accepts wheel spacers without issue. The shallow rear chamfer allows the wheel to remain hub centric even when 5mm flat spacers are used. The chamfer is deep enough to clear the chamfered lip found on some aftermarket spacers that would typically cause improper seating of the wheel and, therefore, wheel vibration.
They all fit
TPMS sensors, which monitor tire pressure, are one piece of technology that can't be compromised. The attention to OEM compatibility on the ARC-8 wheel doesn't end with center caps. All APEX wheels accept OEM and aftermarket equivalent BMW TPMS sensors, and any standard sized metal or rubber valve stem.
Testing & Certifications
We break a lot of wheels
Computer simulated stress tests are no match for real world testing when designing a light-weight wheel that will see extreme loads. All APEX wheels are crush and load tested to exceed JWL standards and those results are independently tested in Japan by the 3rd party government agency known as the VIA. Countless wheel companies falsely claim they are tested and certified by the VIA, and so they lack the certificates to prove it. We test and certify each and every design, diameter, width, and offset, separately. We publicly list all our VIA registration numbers which are on file with the VIA for confirmation. Don't trust brands that claim testing, but can't provide verifiable registration numbers.
Weight & Strength Optimization
It’s all in the details
Various design features were implemented to ensure that the ARC-8 wheel design was as light, but had even more strength to handle the abuses experienced in endurance racing. We began with a beefy, multi-spoke, one-piece design. We built and test this wheel with even higher load rating requirements. We added reliefs in the mounting pad to remove weight between lug holes, where we could safely save weight. The design was then run through Finite Element Analysis (FEA) to further optimize the spoke and barrel design. The result is a lightweight wheel with extra strength in all the right places. Use the EC-7 with confidence is over built for both street and track.
Because being faster is just not enough
The ARC-8 wheel is available in multiple finishes. All APEX wheels are finished using a comprehensive multi-stage liquid paint system over a powder coated base. Often overlooked, painted or powder coated lug hole seats can cause hardware to loosen or begin the spread of paint chipping to more visible sections. The coating process of the ARC-8 leaves lug holes, center bores, and mounting pads untouched which ensures proper fit and torque values.
A wheel you can depend on
All APEX wheels are backed by a 2 year structural warranty and a 1 year finish warranty to the original. This warranty guarantees that all APEX wheels will be free from defects in materials, workmanship, and paint finish under normal and reasonable use.
Free US Ground Shipping
Free shipping is available to members in the 48 mainland US states. Buyers who have product shipped to Alaska, Hawaii, and International destinations will receive a $75 shipping credit that applies towards the actual calculated cost of shipping. Shipping prices shown during registration include the $75 shipping discount.