Over Inflated Tyres on New Prado

A word of warning to those who do not often check their tyres (like me), esp on new vehicles.

I took delivery 2 weeks ago of a brand new Prado GXL Turbo.
Last weekend I purchased a tubeless tyre repair kit which comes with a tyre guage. I decided to check my tyre pressure on the Dunlop Grandtreks and found they had 60 PSI in them. Tyre sidewall reads MAX. 51 PSI?
The manual reads normal inflation is 28PSI and the sticker on the door 190Kpa (approx 27.5 PSI). Mmmmmmmmmmmm

I was now very confused. I even took the tyre pressure guage back and exchanged it for a new one (still the same readings). I let the tyres down to 50PSI until I could contact the Toyota dealer. They told me the vehicles are shipped to them with 60PSI and he apologised saying the pre-delivery obviously did not alter the tyre pressures. They service section recommended 32PSI, saying it gave less tyre roll and helped reduce the tyre edge wear.

My real worry was what could have happened as I have already done approx 1,100km travelling on highways around at 100-110kph on some fairly hot days.

Hope this manages to make those who rarley check their tyre pressure (like me who rely on looks of the right size bulge at the bottom) to actually check their pressure.

Cheers