57 Civic Tyre question

[richatnort]

So i've had this nagging in my head about how my tyres always look flat but they never are. I set the fronts at 36 PSI and the backs at around 30-33 PSI

However they always look flat when the cars sat on the road or drive way. Anyone else noticed this or know why it does it?

I have standard R16 dunlops on them at the minute but have noticed it with all the tyres.