I have the V6, used to get combined 19mpg for the tank, now i'm lucky to get 18.. usually it's 17mpg for me. Haven't tested pure highway road trip yet on the new tires.
I wondered about the tire pressure, and tried doing some research. Still not 100% sure, but from what i saw you only needed to worry about this if you were changing rim size. Couldn't find info on if you are just plus sizing the tire on the same rim. Seems like it should be diff for us since we are going up to a 32" tire.
I started out with 35 psi, then tried 37-38 psi for a month. That was nice, and i thought maybe better with this bigger tire. They have settled back down to 36 and i think it is best to just keep em right there. Play around with it.
I called the tire manufacturer who said that for the 2011 Overland the correct tire pressure for the ltx ms2 size 275/55r20 is 36 psi.
Just picked up my truck - there is absolutely rubbing at full lock in park mode. There seems to be rubbing at full lock in sport mode as well - but only slightly on the felt. The dealership over inflated the tires, so when I get off work I will deflate and check again. I am shocked that all members with this size tire said there was no rubbing at full lock at all ride heights.
No way at all? I'm surprised there is no trick/hack/setting to fix the speedo/mpg for the tire size difference.
Chrysler has been doing this for years, since 2006 at least. They only allow the tech to enter tire factors for the OEM tire sizes (they pick from a menu), all other sizes are excluded. All the WK2 OEMs have the same tire diameter, so there is no need to adjust the factor and the menu item is not provided.
Most tuners allow you free reign.
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 :)