Firestone 003159 FS821 11R22.5 Commercial All-Position Radial Truck Tire 146/143K

The Firestone FS821 is a heavy-duty commercial truck tire engineered for all-position use on medium to heavy-duty trucks in severe service applications. This radial tire delivers exceptional performance with 15% longer mileage and 9% better wet traction compared to the previous generation FS820.

Key Features:

• Three Peak Mountain Snowflake (3PMSF) certified for use in moderate to severe winter weather conditions
• Rugged four-rib tread design with optimized grooves for enhanced traction and even wear
• 50% more biting edges than previous FS820 generation for superior wet and snow traction
• Stone rejector platforms prevent stones from becoming trapped in the tread, protecting the casing from damage
• All-steel casing construction with special cap/base compounding resists cuts, chips, and tears
• Extra-deep, wide tread (24/32" tread depth) provides extended tread life and retreadability
• Improved footprint maintains better contact throughout the tire's life for smooth, even wear
• Load Range H (16 Ply) with 146/143 load index rating for heavy-duty applications
• Speed Rating K for maximum reliability
• Black sidewall construction

Built with a reinforced internal structure and special tread compounds, the FS821 maintains its shape under heavy loads and driving pressure. The zigzag circumferential grooves effectively disperse water and slush to prevent hydroplaning, while the aggressive tread pattern delivers reliable traction across all weather conditions. Ideal for commercial fleets requiring durability, long service life, and all-season versatility.