The standard for all mountain performance. Specializeds Purgatory Grid Tyre features the new Grid casing for enhanced side wall protection combined with the popular Purgatory tread. With FE Analysis, Specialized have optimised the tread of the Purgatory to result in a faster, gripper tyre for more control out on the mountain. The new Grid casing also stiffens up the Purgatory Tyre for more control when cornering at high speeds. A Butyl wrapped folding bead allows the Purgatory Grid Tyre to be ran tubeless with compatible set-ups, allow you to run lower pressure for increased grip & comfort on any terrain. Description by Mark, Rutland Cycling Web Team.