Re: Speedo calibration?
Tire sizes provided in the scan tool selection menu are OEM only, and since all WK2s have the same diameter tires (regardless of wheel size), there really is nothing available to pick that will correct the indicated speed.
Other Chrysler products have a variety of OEM tire sizes so there is a number of options to select from the menu, but typically here folks are going way bigger anyway. Without looking, most techs and service writers assume the WK2 tire factor is adjustable, just like the wrangler.
Some dealers will put into the system that you are running oversize tires which can be a problem for some warranty claims down the road. I've read of at least two WK2 transfer case problems denied for oversized tires.... although there may be more to the story.
2011 WK2 Overland Mineral Gray/Black, Advanced warning, V8; 2009 KK Rocky Mtn V6; 2000 WJ Laredo I6; 1979 CJ7 I6... green... miles of smiles :)