This might sound silly but I am a bit new to harvesting and agnostic in a way so my question might sound out of place. But, is there a reason why more and more combines I'm seeing have rear tires facing the "wrong way"? And I see that on both 2WD and 4WD machines, with and w/o front track system too!? Even a brand new ones, from factory at certain shows I went to were set up that way. Why?