The Goldspeed SF-X ATV tire is designed for loose, loamy, sandy type terrain conditions. Many have found with its unique tread design & advanced carcass technology the SF-X also performs excellent in wet muddy conditions. The SF-X features a smooth sidewall with Puncture Proof Material (PPM) and added Nylon for extreme light weight durability. The special tread design has been developed with top pro ATV Champions around the world & proven to be the only tire in the ATV industry that provides a championship winning performance you can’t beat! A must have tire in annual European beach races & the worlds largest Endure del Verano race in Argentina.