This '68 60 tractor has the exact size tires that Mike D. listed on the stock rims. Don't know if the view is what you want, but had some old pictures to show.
These pics were taken (2004?) before we got the correct muffler and green/yellow seat cover from HAPCO. I'm sure the fronts have tubes, but not sure if we put tubes in the rear. At any rate, all we've had to do is clean them up after the show mud and grass.