Tire Air Pressure in the winter?

[golf_bears]

I have a Mobile Suite 36TK3 5th wheel with 17-1/2” H rated tires. We’re leaving for the RGV in a week. The temperature outside this morning is in the teens. My TPMS indicates the RV tire air pressure in about 75 lbs.

When we travel I check my tires upon departure and air up to about 120 lbs. Max air on the tires is 125 lbs.

It is always suggested to air up when tires are cold. In the summer months airing up to 120 lbs work fine but the outside temperatures then are in the 70’s. Now with the temperatures below freezing what should the tires be aired up to? Do I still air up to 120 lbs but as I travel to warmer climates let air out of tires to maintain 120 lbs?

What do you guys do especially those of you leaving the frigid north for warmer climates?

Thanks in advance and drive safe.