Mmmm, so it is a 6" rim. It looked like it in the photo and that's why I asked. The Tractor 11 ran an 8" rim (6.50x8 tyre). It was the Tractor 8's like my old girl that ran the 6" rim.
To try and shed some light on this puzzle, can you tell me what the front tyre size is?
It is a Tractor 11 and not a Tractor 8?
If you've got the nylon bush in there, happy days! I don't think it matters a great deal which way round it goes. Perhaps just keep an eye on them as they do want to migrate out. If they do something as simple as a worm drive clamp or a split pin solves the problem.
