Bart Wheels 413-5434: Wheel, Series 413, Super Trucker, Black, Steel, 15 in. x 14 in., 5 x 4.75 in. Bolt Circle, 4.00 in. Backspace, Each - Bart Wheels Super Trucker black wheels are designed for 2WD or 4WD trucks and are built with high-strength 950X steel center material and a roll-formed rim shell to handle off-road and over-the-road use with ease. They are available in a choice of sizes and backspacings.