Hello, i am confused with the recommended tyre pressures for my allroad. The label inside the fuel cap says 33 front and 30 rear for light loads and 39 front and 42 rear for heavy loads. The handbook says audi recommend running on heavy load figures for for economy. i am worried that i may prematurely wear out the tyres on the heavy load as I don't carry a heavy load regularly. The light load figures also seem very low for such a heavy car. my wheels are 17" with 225/55/17. amy view would be welcomed. I have scoured the Internet to no avail.