I just installed 4 new wheels with the tpms pre installed. After using the tpms tool which I also purchased, the reset on all wheels completed successfully. However all 4 wheels seems to be reading 50 psi now. Im sure that number is high, is there a way to recalibrate the reading to the actual pressure?

 

That number does seem high, but you need to check the actual tire pressure with a good gauge to know how far off the TPMS system is off.

 

Is this on the 2013 in your sig ??

If so, you posted this in the wrong section.

Also, S550 (2015-up) does not need the training tool that the S197's did. Put my winter wheels from my S197 on my 2016 last Fall and got the TPMS error code within 20 miles (was curious to see what happened). Swapped in correct S550 Sensors and the car automatically found them and has been fine (and accurate) ever since.

Doug

 

I have 2 Accugages that both read the same. They surprisingly match my tpms exactly. The same for the '12 SS Camaro I had.