Afternoon all, found this brilliant blog looking for tyre pressure info. Now much more informed thanks to you all. Have a 12 ft expanda, after having a Dove for 20 yrs. One difference is that my plate says run at 325 kpi i have just discovered ( see my other post under tyre pressures ) It was delivered at 280. Been to Qld last winter, off to Perth after Easter. Happy days to all.