Your largest costs are fuel and tyres? Think on this. A 22.5-inch wheel rotates ap- proximately 30,000 times per hour at 90 to 100km/h. Regardless of speed, a balanced truck or bus will gain up to 50 per cent extra tyre life. Thou- sands of Australian and New Zealand drivers use Atlas Balance Rings to add life to tyres, suspension, steering, braking and driveline components.