or little tires, speedo says 60mph realy going 30mph and getting 13 so fuel/miles on trip would be 26

 

seeing hey's screen shot picture above reminds me of a funny story. on another truck forum a few years ago, someone posted a screen shot like that, but the window he was showing only covered about half the desktop. also showing on the desktop was another folder labeled - ******* pics.

oops...