18×9.5″ BBS RG-R Wheels for Nissan Skyline

BBS RG-R is a definitive choice for a “period-correct” yet lightweight upgrade for the Nissan Skyline GT-R. Unlike the multi-piece BBS LM, the RG-R is a one-piece die-forged aluminum monoblock, offering superior stiffness-to-weight ratios and a cleaner, classic 8-cross spoke (mesh) aesthetic.

Listing Details

• Set of Four BBS 18″ Wheels
• Forged Alloy Construction
• Diamond Black Finish
• Manufactured by BBS in Germany
• 9.5″ Wheels w/20mm Offset
• Part #RG708
• Center Caps, Hub Rings, & Valve Stems

For the R32, R33, and R34 GT-R, the 18×9.5″ size is the industry standard, providing a square setup that maintains the balance of the ATTESA E-TS all-wheel-drive system.

1. Technical Specifications (GT-R Spec)

To achieve the correct stance on a Skyline, you must pay close attention to the offset (ET).

• The “Flush” Spec (RG708): $18\times9.5″$ ET20. This is the preferred offset for the R33 and R34. It pushes the wheel face out to fill the flared fenders perfectly.

• The “Standard” Spec (RG701): $18\times9.5″$ ET38. This is a more conservative fitment often used on the R32 or for those who want to avoid any risk of fender rubbing.

• Weight: Approximately 18.9 lbs (8.6 kg) per wheel. This is exceptionally light for an 18-inch wheel, significantly reducing unsprung mass for better suspension response.

• Bolt Pattern: $5\times114.3$ mm.

• Center Bore: Features the BBS PFS (Precision Fitment System), which uses replaceable hub-centric rings to ensure a vibration-free fit on the $66.1$ mm Nissan hub.

2. Fitment Guide by Model

• R34 GT-R: A direct fit with the ET20 offset. It clears the factory gold Brembo calipers with plenty of room and accommodates a 265/35R18 tire without modifications.

• R33 GT-R: Also pairs best with the ET20. This setup provides a muscular look that matches the R33’s larger body proportions.

• R32 GT-R: The ET20 is aggressive here. While it looks fantastic, it often requires rolling the rear fender lips and running slightly more negative camber to avoid rubbing if the car is lowered. The ET38 is a safer “bolt-on” alternative.

3. Comparison: BBS RG-R vs. BBS LM