Specifications
Description
This forged, 8-spoke take on our extremely popular SM-10RS design was tailor-made for the ND MX-5 Miata platform. It delivers an ideal balance of weight savings, durability, and track-ready stiffness with an incredible 1,400 lbs load rating, over 230 lbs stronger than required for JWL certification and 185 lbs stronger than most aftermarket ND Miata wheel options, making it perfect for both competition-focused ND Miatas and aggressive street builds.
- 10K Ton Forged 6061-T6 Aluminum
- Ultra Durable Track-Ready Wheel for ND Miata
- Nearly Unmatched 1,400 lbs Load Rating
- I-Beam Spokes for Reduced Weight
- Stronger Sprint™ Spec Inner Lip
- Massive Brake Clearance
- Unmatched Replacement Program
- Lifetime Structural Warranty
- Independently Tested and Certified
10K Tons of Pressure
Our new forgings weigh as much as 120 pounds before machining. To form such a thick blank we require special equipment capable of 10,000 metric tons of pressure. This extreme pressure increases the strength of the aluminum by eliminating porosity and improving the grain structure.
True Motorsport Blanks
Many companies use 3rd-party blanks intended for non-motorsport wheels which can severely limit sizes, concavity, spoke design, and critical brake clearance. We designed our very own blank profiles from scratch to give us total control over the final product.
I-Beam Spokes
One of the most noticeable features of the SM-10RS is its use of side-milling on both sides of each spoke, creating an I-beam effect. Any excess material that doesn’t add strength is carved out using a precision CNC ball cutter. Side-milling is often deemed cost-prohibitive by others, but for true performance without compromise we believe it's essential.
A Stronger Lightweight Wheel
Our forged Sprintâ„¢ wheels are lightweight without the strength compromises found on typical lightweight wheels. First, we carved out as much material as possible, then we purposefully added one pound back to reinforce critical areas, creating a stronger inner lip and a higher load rating. ² What’s the point of a lightweight wheel if it’s fragile?
Weight Optimized
We conducted extensive Finite Element Analysis (FEA) to reinforce high-stress areas and to remove material where it didn’t improve strength. The result is a wheel that is exceptionally light without the strength compromises found on typical lightweight wheels.
Greater Stiffness
The SM-10RS is not just another style to choose from. We used Finite Element Analysis of bending loads to optimize spoke geometry for greater stiffness without increasing weight. In fact, the SM-10RS is nearly identical in weight to our popular VS-5RS yet almost 10% stiffer, and 25% stiffer than our first generation of forged wheels.
Independently Tested
We don't rely solely on computer simulations or unverifiable in-house testing. We believe independent testing is critical to protect consumers in this unregulated industry. We chose STL, an independent lab in Ohio, to test our Sprintâ„¢ wheels far above JWL standards, including increases in testing duration, impact drop height, and total load.
Tougher Inner Lip
Introducing the Sprintâ„¢ spec inner lip, with a unique channel profile that makes it even stronger than our previous designs. So even though our Sprintâ„¢ wheels are pounds lighter than comparable flow formed wheels, the inner lip is stronger.
32% more reinforcement than our flow formed wheels!
Big Brake Clearance
From day one, APEX has been on a mission to build wheels that clear big brakes. Our new forged wheels are the product of everything we’ve developed over the past 10+ years, including an innovative high-clearance barrel design and vehicle-specific spoke profiles.
Deeper Concavity
Our new forgings were redesigned to create extra deep, concave spoke profiles. Their new shape allows us to make any profile, from flat to deep and everything in between. Each one is optimized for a specific application using 3D laser scans of factory and aftermarket brake kits.
Paintless Knurled Bead
Whether it's a day at the track or months of street driving, repeated hard braking and acceleration can make a tire slip along the bead seat and go out of balance, causing vibration. Knurled beads help, but are less effective when painted over. Our forged line features unpainted knurled beads that stay sharp and maximize grip.
Built for Impact Sockets
Track wheels need track tools. Don’t settle for wheels that require undersized tuner lugs or thin walled sockets. All APEX wheels accommodate over-sized race lugs and impact sockets to make swapping wheels lightning fast. 32mm Socket diameter clearance.
