What PSI should tires be during the winter?

I run the same psi year round. The company buys the tires (they own the truck) so I run whatever they tell me. 120 in steers and 100 in the drives.

 

steers: 100psi cold (down to 20degrees)
95psi if colder
that should run your pressure to 110 or 115psi hot
drives: 90psi cold
85 psi if colder than 20degrees
that should run your pressures to 100 to 105psi hot

 

I run 105 steers 100 drive tires with 11r24.5 tires. I keep this psi year round.

In the summer I make sure they are 105 and 100 when the tires are “cold” at maybe 90 degrees outside.

In the winter I make sure they are 105 and 100 when the tires are “cold” at maybe 40 degrees outside.

So assuming zero leaks, I essentially add air in winter and take some out in summer. I run mainly I-10 and can’t afford my tire psi to dip especially running 120 degree summer days.

 

I run my tires the same psi year round. I check psi after sitting overnight.
Use your higher summer psi year round.

 

Tire pressure is always expressed at local ambient temperatures.
Stone cold over night is best, first thing in the morning.
If you filled a tire in Arizona, say 75 degrees. Then next week checked it in Montana, say -10 degrees. Then you probably would see a 10-20 psi drop. But now you just fill them back up to your target pressure.
Next week they may read 120 psi in Arizona again, you could drop the pressure if you like. Generally just do it in where ever you happen to be and don’t worry about it.

 

Just go to Loves tire shop and ask them to change the air in your tires to the new "Winter Air" it automatically adjusts for the seasons.

 

115 on steers and 100 on drives and trailer.

 

Same year round, 130 on steers, 105 drives and trailer

 

80 steers and 100 drives. Unless I’m loading 45k on my drives then I will bump the drives to 120 psi. Time of year makes no difference to me.