What temp is cold PSI?
|Pressure at 20 °C (68 °F)||10 psi||70 psi|
|50 °F||9.2 psi||67.1 psi|
|32 °F||8.3 psi||64.2 psi|
|14 °F||7.5 psi||61.3 psi|
|−4 °F||6.6 psi||58.4 psi|
Should I put 80 PSI in my tires?
Passenger tires are usually inflated to around 30–33 PSI per car manufacturer recommendation and have a max of about 50–52 PSI. Truck tires are usually inflated to around 50 PSI and have a 70–80 psi maximum.
What does 90 PSI cold mean?
If the sidewall of your 4.80-12 size tires say 90 psi then that is what you want them to be when the tires are cold (after they have been sitting for a while like overnight). This is the psi rating that the manufacturer has tested and approved to be safe with the weight rating that is listed on the tire.