you should be checking your tires every other week, especially when the
temps fluctuate. unless you got nitrogen in there every 10F change will
result in 1psi change. tires loose anywhere from 1-2psi just sitting
around even in the same temp every month.
i bought my Fit the other week; dealer set the pressure to wat appears
as 32psi, but they did it in their service bay (about 65F).
my car sat outside in 15F and as i thought, pressure went down 5psi
to 28psi. they were all underinflated by 4psi. i knew this was going
to happen so i pressured them up to 32 before taking the car out.
set your tires to 32 before you drive in the morning when you check.
remember wat the ambient temp was too so you know next time if the
temps go up or down you can reference about how many psi you would
be higher or lower from last time you checked. cars parked outdoors
will show higher pressure on the side of the car facing the sun.
i also checked the lug torque...sometimes new cars come with lugs
pretty loose. mine were fine at 90lbs/ft.
these are some minor check points i do after buying new cars.