SimpleTire Review: Bridgestone Blizzak WS70

Bridgestone’s Blizzak WS70 is a strong selling winter tire, and for good reason. The Blizzak WS70 is actually the fourth generation of Bridgestone Winter Biter tires, with plenty of technological and design advances to reflect that evolution.

The Blizzak WS70’s tread compound is designed with Bridgestone’s NanoPro-Tech silica-enhanced Tube Multicell formulation on top of their standard winter compound. Tube Multicell technology is designed with thousands of microscopic tubes and cells incorporated into the rubber, helping to wick water away from the tire’s contact patch; as the tire’s tread wears, new pores and tubes are continuously exposed. The compound is also designed for flexibility at freezing temperatures for improved grip.

This innovative tread formulation is molded into a directional tread pattern, with a circumferential center rib and intermediate and shoulder blocks with 3D zigzag sipes for excellent traction on dry pavement or wintry road conditions. Four main grooves at the circumference help evacuate water and slush from the tire footprint to fight hydroplaning.

Internally, the Blizzak features twin steel belts and a spiral-wound nylon rail for long wear, high-speed durability and a forgiving ride. When the Blizzak WS70 reaches 50% of its tread life, a tread depth indicator molded into the tread design will let the driver know that only 10% of the remaining tread is still the Tube Multicell material. The Blizzak WS70 carries the industry’s Mountain + Snowflake stamp on the sidewall, reflecting its winter tire rating.