Apex ARC-8 17x8.5 Flow-Formed Wheel 5x120 BP / ET40 / 72.56mm CB - Hyper Black (BMW) (ARC81785ET40-5120-7256-NHBK)
The Apex ARC-8 has become one of the most respected wheel designs in the BMW performance community thanks to its lightweight engineering, aggressive motorsport styling, and proven track-capable durability. Specifically designed for BMW applications utilizing the 5x120 bolt pattern, this 17x8.5 ARC-8 delivers improved handling response, sharper steering feel, and reduced rotational mass while maintaining the strength enthusiasts demand for aggressive street and track driving. Finished in Hyper Black, this wheel gives your BMW a bold, modern appearance with unmistakable motorsport influence.
Built using advanced flow-forming technology, the ARC-8 increases barrel strength and stiffness while remaining significantly lighter than conventional cast wheels. Extensive Finite Element Analysis (FEA) allowed Apex engineers to reinforce high-stress areas while eliminating unnecessary material for maximum performance efficiency. The result is a wheel engineered to withstand repeated hard driving while maintaining excellent brake clearance, structural integrity, and long-term reliability.
Quick Specs
- Part Number: ARC81785ET40-5120-7256-NHBK
- Wheel Diameter: 17 inches
- Wheel Width: 8.5 inches
- Bolt Pattern: 5x120
- Offset: ET40
- Center Bore: 72.56mm
- Finish: Hyper Black
- Construction: Flow-Formed Aluminum
- Vehicle Compatibility: BMW Applications
- Hub Centric Design
- Big Brake Kit Clearance
- OEM TPMS Compatible
- Compatible with OEM and Aftermarket Hardware
- Open Hub Center Design
- JWL and VIA Certified
- Lifetime Structural Warranty
- 1 Year Finish Warranty
Features
- Flow-formed construction improves barrel strength while reducing overall wheel weight
- Designed specifically for BMW 5x120 applications
- Deep-concave ARC-8 spoke profile delivers aggressive motorsport-inspired styling
- Engineered using advanced FEA testing for optimized strength and durability
- Designed to clear many popular aftermarket big brake kits
- Engineered for maximum weight savings without sacrificing structural integrity
- Open hub center design allows for faster wheel swaps during track use
- Oversized lug openings accommodate impact sockets and race lugs
- Hub-centric design minimizes vibration and ensures precise fitment
- Compatible with OEM and aftermarket TPMS sensors
- Works with OEM wheel hardware and most aftermarket lug setups
- Hyper Black finish delivers a bold and aggressive performance appearance
- Multi-stage finishing process preserves mounting surfaces for proper torque values
- VIA certified and tested beyond standard JWL requirements
- Includes Apex gloss black center cap compatible with OEM sizing
- Covered by Apex accidental damage replacement program
- Backed by Apex lifetime structural warranty
Built for Real Enthusiast Performance
The ARC-8 was engineered for enthusiasts who expect more than just appearance from their wheel setup. Reducing unsprung and rotational mass sharpens steering precision, improves braking response, and enhances acceleration characteristics while maintaining the durability needed for repeated aggressive driving. Whether your BMW is built for canyon carving, HPDE events, autocross competition, or spirited street use, the ARC-8 delivers the confidence and performance serious enthusiasts demand.
Fitment
Fits select BMW applications utilizing:
- 5x120 Bolt Pattern
- 72.56mm Center Bore
- ET40 Offset
Always verify wheel, tire, suspension, and brake clearance prior to installation.
FAQs
Q: Are Apex ARC-8 wheels suitable for aggressive track use?
A: Yes. The ARC-8 was specifically engineered for aggressive street and track driving with reinforced flow-formed construction and extensive durability testing.
Q: Will these wheels work with OEM BMW TPMS sensors?
A: Absolutely. Apex ARC-8 wheels are compatible with OEM and aftermarket TPMS sensors along with standard valve stems.
Why Buy from Beefcake Racing?
At Beefcake Racing, we understand what enthusiasts expect from a true performance wheel setup. That is why we carry proven products backed by enthusiast-level support, fitment expertise, and real-world performance knowledge. Whether you are building a dedicated track setup or upgrading your street-driven BMW, our team can help you choose the right wheel and tire combination for your goals.
Need help with wheel fitment, tire sizing, or brake clearance? Contact Beefcake Racing today.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
Note: Wheels that have been mounted with tires are considered used and cannot be returned or refunded. Please verify vehicle fitment before placing your order, and always test fit wheels prior to tire mounting.
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