Originally posted by benracin:
She has brand new tires
Did the new tires make the problem worse/better/no change?

I have a '92 E350, it only has 56K on it (Motorhome used 15x per year) so I haven't got to the point where wear is an issue.

I did have some funky tracking when I used different brand steering and drive tires. Heavy trucks do it, but my little RV didn't like it. Went back to the same tread pattern front and rear and no more goofyness.