The Minion DHR II is a complete redesign from the Minion DHR The shoulder knobs were borrowed from the legendary Minion DHF and then beefed up to handle duty as a rear tire and center tread has been heavily ramped to roll fast and track straight under braking Compound: Dual Compound EXO protection increases cut and abrasion resistance in the sidewalls Tubeless ready allows for use without a tube, just add sealant All Maxxis tires 2.40" and up are considered WT according to Maxxis whether or not they are labeled WT ISO Diameter: 622 / mountain / 29" TPI: 60 Max Pressure: 60psi (2.3"); 50psi (2.4"); 40psi (2.6") Bead: folding bead Weight: 880g. (2.3"); 960g. (2.4"); 1,020g. (2.6")