315 mm (approx. 260mm running surface on heavy patterns like GT776)
Aspect Ratio: 80%
Construction: Radial (R)
Rim Diameter: 22.5 inches
Ply Rating / Load Options: Available in 18PR, 20PR, and heavy-duty 22PR variants
Load Index & Capacity (e.g., GT178/GT776 models): Single load index 157 (up to 4,125 kg / 9,090 lbs); Dual load index 154 (up to 3,750 kg / 8,270 lbs)
Standard Rim Width: 9.00 inches (also compatible with 9.75 options depending on application)
Features
Size Breakdown (315/80R22.5): Has a 315 mm section width, an 80% aspect ratio, a radial carcass construction (R), and fits a 22.5-inch rim diameter. [1]
High Ply Rating: Commonly available in heavy-duty specifications such as a 22-ply rating (22PR) to withstand severe structural stress. [1]
Tread Design Options: Available in specialized patterns like the GT776 (for mining/mixed roads) and GT258 (aggressive directional blocks for rough surfaces), offering deep tread depths for extended wear life.
Robust Block & Lug Patterns: Continuous shoulder blocks and aggressive tread blocks maximize traction and prevent uneven wear.
Enhanced Compound: Built with a specialized low-heat and high-mileage rubber compound that resists cuts, punctures, and tearing on unpaved or rocky terrain.
Low Rolling Resistance: Optimized to improve fuel efficiency while maintaining strong grip in wet or dry conditions.
