OPEN COUNTRY C/T Tires (345080) by Toyo®. LT275/65R20, Speed Index 99 mph, Max Load 3748 lbs, Tire Weight 58 lbs. Season: All Season. Type: Truck / SUV, All Terrain / Off Road / Mud. Pavement is optional with these versatile all-terrain tires. They bring rugged good looks, all-season handling, and a comfortable ride to your pickup or SUV. Their aggressive tread pattern offers good traction in bad conditions, on pavement or off.