The Purgatory Control 2 Bliss Ready is the standard bearer for all mountain tire performance. By applying FE Analysis to the Purgatory weve optimized the tread to result in a faster grippier tire for any all mountain excursion. Casing: 60 TPI for 15% enhanced cut-resistance Bead: Foldable Butyl wrapped bead = 2 Bliss Ready Center Compound: 60a / Shoulder Compound: 50a> 650b x 2.3"; psi 35-65; approximate weight 730g> 650b x 3.0"; Max Ride 20 psi / Max Install 35 psi; approximate weight 980g