Tread lightly and save

I HAVE to agree. Buy good tyres, keep them inflated to the correct pressure, maybe a little higher, and drive with your head instead of your right foot and you will get better mileage from your tyres. But the Commodore is prone to higher wear of the rear tyres because of its design. The old independent rear suspension was a compromise design and not one you would use if not constrained by budgets.