SSR Professor SP1 3 Piece Spectrum Silver 18x10 (+3) 5x114.3 Extreme SSR Professor SP5 5x115 20X11.5+ 13 HP Disk High Bright Silver SSR Professor SP5 18x8.5 +30 5x114.3 NR SSR Professor SP5 R18 R19 , 18", 1 SSR Professor SP4R 5x114.3 17X8.5+ 26 HP Disk Flat Black Threepieceus. The SSR Professor SP5 takes the bold 5 spoke concept to the next level with a split spoke design that emphasizes both strength and lightness. Combining aggressive looks with race ready performance, the SP5 was developed to satisfy drivers who crave precision handling, custom fitment, and head turning style. Its split five spoke layout provides enhanced brake clearance and distributes stress evenly across the face. Using SSR's proven 3 piece forged construction, the SP5 consists of a strong yet lightweight center disc paired with a spun outer barrel for ideal stiffness and reduced rotational mass. Available in a wide range of face profiles and finishes, the SP5 gives builders the flexibility to achieve both the performance and stance they envision. Split 5 spoke design enhances rigidity and aesthetic aggression. 3 piece modular construction for tailor fit sizing and offset tuning. Lightweight forged center disc offers improved handling dynamics. Suitable for both motorsport and show quality applications. For decades, SSR Wheels has been a pioneer in the Japanese wheel industry, trusted by professional motorsports teams and enthusiasts alike. With a relentless focus on performance, safety, and design innovation, SSR continues to push the boundaries of what's possible in wheel engineering. Each wheel is rigorously tested and manufactured to meet or exceed JWL and VIA standards, making SSR a brand you can count on whether you're attacking corners or turning heads.