Low pressure on cold mornings

With the lower temps hitting ... Every morning the sensors come on for at least one of the back tires. I have the 20" Goodyear Wranglers and I'm just wanting to make sure it's not jacking with my wearing of the tires.. my drive to work is 20 miles and normally about mile 15ish they get up high enough the alert goes off. The backs will be around 29-30 pounds. The fronts move up to 35ish.

Do I need to add any air? Is this normal? (Also this is the first vehicle that has ever had pressure sensors haha)

 

Air molecules get closer when cold. Add air and your good. As air warms up pressure will go up in the tires.

 

Ya I'm just worried if I add air they may have too much once the air warms up inside ... How do I make sure that doesn't happen or I'm not always adding or releasing air ..

 

Every year for as long a rubber tires have been on earth they lose air when the first week of winter cold settles on them. Air them up a few PSI to the proper level and live long and prosper. No need to worry.

 

Don’t over think it. 38-40 psi in the winter. 35 in the summer.
It’s the way things have been for a very long time

 

At the very least, match them all up. Put the rears to match the fronts at 31/32 psi.