I bought a car brand new 9 months ago. My tire pressure sensor came on. I checked the tire pressure, and it was at 35 PSI. My maximum tire pressure is 51 PSI with a warning not to fill above 40 PSI. I filled my tires to 40 PSI. The warning light did not go off. I then checked the car specific information in my door jam, and it says to keep my tires at 30 PSI:
I am confused. Assuming my tires did not gain air pressure over the last 9 months, they were at least at 35 PSI when brand new.
So my tires are were at 35+ PSI when brand new, and they are at 40 PSI now. The car recommendation is 30 PSI. The tires have a max capacity of 51 PSI.
Should I let 10 PSI out of my tires? I was under the impression they were low at 35 PSI.
It is a 2015 Subaru Forester.