Hummer H1 Black Bungee Tire Cover 37 X 12.5 R17 (Blank) Skintight premium denim finish tire covers, made of Black (Denim Finish) 16 oz. Vinyl are designed to protect your exterior spare tire from dirt and sunlight. Unique crescent back prevents cover blow off on open top vehicles. Heavy Duty 3/16 This tire cover is a classic black denim tire cover with no imprint for a clean look. Each Tire Cover is designed specifically for your exterior spare tire. If it fits like a glove its Skintight.