Has anyone played around with the settings on the setup screen (hold the menu, map/guide & cancel buttons all at the same time)? I'm curious if everyone else's trip selection button is dimmed and what does the tire calculation do? I have 20's on mine and was wondering if adjusting this would help compensate for the mileage difference because of the larger wheel.

 

I've visited those screens but I have never tweaked any of the settings. I don't want to mess anything up. If I feel something needs adjustment, I'll have the dealer do it for me.

It sounds like the wheel size adjustment would help in your case, but I'd verify that with the dealer.