Advan Racing RZIII – 18×9.5 +35 | 5×114.3 | 73mm Bore | Hyper Platinum Black & Diamond Cut | YAJ38-J35EHPC

Advan Racing RZIII in 18×9.5 +35, 5×114.3, 73mm bore, Hyper Platinum Black & Diamond Cut finish. Yokohama’s flagship forged multi-spoke wheel with direct motorsport heritage from Super GT and Japanese time attack competition. Approximately 6 lbs per wheel — exceptional weight for an 18×9.5 in any construction method. 24 lbs (set of 4). Ships fast across Canada and the US.

Advan Racing and the RZIII

Advan Racing is Yokohama Rubber’s motorsport wheel brand — the wheel counterpart to Advan’s well-known tyre line. Advan Racing sits at the top tier of the Japanese wheel market alongside Rays Volk Racing, and the RZIII is their premier multi-spoke competition design:

• Motorsport pedigree: The RZ series has been used in Super GT, JGTC, and Japanese national-level time attack competition across multiple generations. The RZIII carries the engineering evolution of that competition program into the current generation.
• Forged construction: The RZIII uses a flow-forming forging process — the wheel is forged from a billet aluminium disc and then spun/flow-formed to final wheel width under heat and pressure. This aligns the aluminium grain structure for high strength and allows very thin spoke and barrel cross-sections that would not be achievable in casting. At approximately 6 lbs for an 18×9.5, the RZIII demonstrates the weight efficiency that only forging can achieve at this diameter and width.
• Made in Japan: Advan Racing wheels are manufactured in Japan, consistent with their OEM motorsport supply chain quality standards.

18×9.5 at +35 — Fitment

The +35 offset on an 18×9.5 is a moderate fitment specification — appropriate for stock-arch and lightly modified 5×114.3 vehicles:

• 350Z / 370Z: The Z33 and Z34 platforms have generous rear arch clearance. 18×9.5 +35 provides a clean, slightly aggressive fitment without requiring arch modification on most builds. Confirm front arch clearance separately — the front is typically the limiting factor on Z-car fitments.
• EVO X: 18×9.5 +35 is within the stock-arch fitment range for the CZ4A on stock suspension. Confirm with your specific tyre width and suspension setup.
• WRX / STI (GR/GV/VA, 5×114.3): 18×9.5 +35 fits within stock arches on most GR/GV STI builds. VA (2015+) STI has slightly different arch dimensions — confirm fitment.
• BRZ / GR86: 9.5" width at +35 is on the aggressive end for stock BRZ/GR86 arches — tyre width selection will determine whether arch rolling is needed. 245/40R18 is a common fitment on this wheel spec for these platforms.

Hyper Platinum Black & Diamond Cut — Finish

The Hyper Platinum Black & Diamond Cut is one of Advan’s most visually distinctive and technically demanding finishes:

• Hyper Platinum Black base: A deep metallic dark finish applied to the spoke sides, barrel, and recessed areas. The “Hyper Platinum” designation indicates a metallic depth and lustre beyond standard matte or gloss black — the base coat has a dark charcoal-to-black tone with metallic particle depth visible in direct light.
• Diamond Cut spoke faces: After the base coat is applied and cured, the spoke faces are CNC lathe-machined to remove the paint layer and expose the bright machined aluminium underneath. The CNC cutting creates a precise, reflective surface across the spoke faces — producing a two-tone contrast between the dark painted areas and the bright machined aluminium. The “Diamond Cut” name reflects the precision and reflectivity of the machined finish.
• Maintenance note: Diamond cut finishes are sensitive to harsh wheel cleaners and acidic products — use pH-neutral wheel cleaner to preserve the machined surface and avoid etching the exposed aluminium.

Hub Bore — 73mm

The RZIII YAJ38-J35EHPC has a 73mm hub bore. Hub centric rings are required for all common 5×114.3 fitments — rings centre the wheel precisely on the hub flange and prevent vibration from imbalanced seating on the lug nuts alone:

• Nissan 350Z / 370Z / S-chassis: 66.1mm bore — requires 66.1–73mm hub centric rings
• Mitsubishi EVO X: 67.1mm bore — requires 67.1–73mm hub centric rings
• Subaru WRX / STI (5×114.3): 56.1mm bore — requires 56.1–73mm hub centric rings
• Hyundai Genesis Coupe: 67.1mm bore — requires 67.1–73mm hub centric rings

Forged — made in Japan by Yokohama / Advan Racing. 73mm bore — hub centric rings required (not included). +35 offset — confirm arch clearance. Diamond Cut finish — use pH-neutral wheel cleaner only. Tyres not included.

Specifications

• Brand: Advan Racing (Yokohama)
• Model: RZIII
• Part Number: YAJ38-J35EHPC
• Diameter: 18"
• Width: 9.5"
• Offset: +35mm
• Bolt pattern: 5×114.3
• Hub bore: 73mm (hub centric rings required — not included)
• Finish: Hyper Platinum Black & Diamond Cut
• Construction: Forged aluminium — Yokohama / Advan Racing, Japan
• Weight: Approximately 6 lbs per wheel (24 lbs set of 4)