Built on "Blackwater" type casing, the Trail Wolf achieves a 4 ply rating through an extra- thick sidewall, and feature Carlisle’s patented Rim Guard design, making this the most puncture-resistant trail tire on the market today Special design yields an incredibly smooth ride over virtually all trail conditions Harder rubber compound means you receive better wear and longer intervals between replacement Very economically priced, the Trail Wolf is the best value in replacement tire choices today Tubeless