Tyre pressures

[Lefty107]

I have been running on what I thought was the correct pressure of 5 and 5,5 but have started wearing outside edge and mot garage said classic case of underinflated. Do check every few weeks use often. May be underinflated or just overweight. Have put on a few p kinds recently

 

[trevskoda]

My 225/75r/16 say 80 psi but my bus no longer has 4 tons of books inside, so I have them down to 65/70 psi and all wear evenly across the tread and a much smoother ride, mind you, I think I'm going to tighten up the front torsion bars as Irish roads make her bounce a foot in the air, some dimwit had them in the lowest position and no travel at all.