Maxxis Roxx Zilla Tires The 8 ply Maxxis RoxxZilla tires are designed for rocky terrain and harder surfaces. Crawl through rocks with ease with the soft rock crawling tread compound and high multi-layer sidewall design. Features: Designed for rocky terrain and hard pack 8 ply rated radial construction High multi-layer sidewall design enhances sidewall traction for rock crawling High void ratio in center and two layers on shoulder improve grip and puncture resistance Soft rock crawling tread compound Select sizes available in competition rubber compound For off highway use only