The Rambler is designed with the volume you need for comfort and the tread you need for speed and control. Tightly packed centre knobs are ramped for rolling efficiency on hardpack roads, and spaced-out side knobs provide predictable cornering in varied terrain Specification Best for Hardpack, Loose/Hard Cornering Control 1 2 34 Rolling Efficiency 1 2 34 Compound : Dual Compound Technology Breaker : Silkshield Puncture Protection Tubeless Tyre Max PSI : 75 Bead Type : Folding Carbon TPI :60 Weight : 415g Dual Compound Two compounds used within the tread of select tires to offer lower rolling resistance and increased cornering grip SilkShield SilkShield offers protection from bead to bead whereas Silkworm is found under the tread only. SilkShield provides an additional level of protection for sidewalls as well as under the tread Tubeless Read/strong/libr> Tubeless tires provide the rider with many benefits: the ability to run lower air pressures, which improves traction; lower rolling resistance when compared to a tube-type tire; and less chance of flatting since there is no tube. Liquid sealants should only be used in the following types of tires: Tubeless Road, Tubular, and Tubeless Ready. The use of liquid sealants in any other Maxxis tire will void the warrant/librbr> Technology: 60TPI Folding Silkshield