A healthy burnout is required, and tire pressure worked best when set at 15 psi. Your quickest elapsed time will come when you run as much tire pressure as possible without sacrificing traction. This will cut down on rolling resistance and make for a smoother ride on the top end. We tried 16 psi and spun, so we dropped it down to 15 psi and carded three 1.57 60-foot times in a row. That's with 100-percent bone-stock suspension.