Tires Cycling, Outdoor Recreation, Sports & Outdoors, Tires & Tubes, Zol Zol Montagna MTB Mountain Folding Bike Bicycle Tire 27.5×2.10 Black Review by Coyotea August 4, 2018 No Comments Folding Bead 30 TPI Pressure: 50 PSI Weight 760 Grams Size 27.5×2.125 Zol Montagna MTB Foldable Tires Are Tough built with Durability, Puncture Resistance, Traction and Toughness in mind.