I try and keep them as follows:

Front 36-38 PSI
Rear 38-40 PSI

For every 10 degrees increase in tire temperature the tire pressure will go up about 1 PSI. Correspondingly for every 10 degrees decrease in tire temperature the tire pressure will go down about 1 PSI.

Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety. Benjamin Franklin, US author, diplomat, inventor, physicist, politician, & printer (1706 - 1790)