Commercial drivers need a tire that's built to last as they drive many miles, and the FS821 from Firestone does that and more. A deep, aggressive tread pattern with optimized grooves and stone rejectors promote a longer tread life by guarding the tire from damage, and the FS821's large footprint puts more rubber on the road to boost traction and promote even wear. The FS821 features 50% more biting edges than the FS820 for strong traction and performance on wet and snowy roads, and the tire is Three Peak Mountain Snowflake certified for use in moderate to severe winter weather conditions.