Hi,

I own a 997T and as stated in the thread title, I am straggling the last year with a problem.
I have searched the internet, but I cannot find any similar problem.
After changing tires to my car I noticed that the pressure indicator in the car was about 5psi lower than the actual tire pressure.
Let's spare you some questions...
-The tires are Pirelli P Zero N1 (the exact same as the ones I replaced)
-The rim pressure sensors were not damaged in the process
-All the sensors are -5 psi off

I own a PIWIS tester and cannot find any calibration for the sensors

Any help/suggestion would be appreciated