Trailboss2022

Anyone verify?

Hello all, Just joined. I have a 2022 refresh Trail Boss in need of tires soon. There doesn’t seem to be much info out there on the new refresh trucks. I believe I have the new global B ecm. I’ve read a couple threads that mention that the new refresh trucks use the gps signal in the truck for calibrating the speedometer. Can anyone verify that this is true? There are no speedo calibrators available yet for the refresh yet and the dealer won’t calibrate for bigger tires. Any confirmation or feedback would be much appreciated! Thanks everyone in advance!