A good way of double-checking that your pressures are correct for your application is the 4psi rule, recommended as a good rule-of-thumb for accurate, appropriate tyre pressures.

Check tyres when cold ie early morning
and then straight after a decent highway run you should see a 4psi (0.275 bar) increase.
If it is less, you have set your cold tyre pressures too high;
if it is more, then you have set them too low.
Adjust the cold pressures accordingly and check the results when hot again and you should have a 4psi difference.