HTR Z5

The Sumitomo HTR Z5 is an ultra-high performance summer tire designed for drivers of sports cars, performance sedans, and sporty coupes. It aims to deliver a thrilling driving experience without sacrificing safety and comfort. The HTR Z5 distinguishes itself by providing a balance of impressive grip and responsive handling, particularly in both dry and wet conditions, with a reasonable tread life.

This tire incorporates an aggressive, asymmetric, five-rib tread pattern. A continuous center rib enhances stability and steering response, while substantial shoulders improve lateral grip. Wide circumferential grooves are designed to evacuate water efficiently, increasing hydroplaning resistance. Notches in the intermediate and center ribs, combined with the tread compound, contribute to enhanced wet traction.

The internal construction includes a two-ply polyester casing supporting two high-rigidity steel belts. A full-width nylon reinforcement ply enhances high-speed stability, and a high-modulus bead insert strengthens the sidewall to improve handling. The HTR Z5 has a UTQG treadwear rating of 320. The tire's design and construction make it a strong contender in the ultra-high performance summer tire category, offering a blend of performance and value.