All tires were low on pressure. The passenger side front was the lowest, 22 psi. The others were 5 psi low. Now all tires are at 32 psi cold. Will check later today and again tomorrow. Passenger side front may have a nail or something. Although I did remove that tire and visually inspect it, I didnt see any obvious problems.
Checked the passenger side front tire the next day and air pressure did not drop...still monitoring the situation...
