Looked at a used L4330, the valve stems on front tires both face toward inside of tractor, which makes them difficult to access because the 4WD gearbox sits right in the inside of the rim. I'm not sure the rims could be flipped the other way, there's a slight raised lip around the inner edge of the rim, that lip centers the rim on the raised edge of the axle/hub. If I turn the rim around I think that lip will keep the surface of the rim from making proper contact with the hub. I talked to an L4330 owner on the forum, his valves face out. Any thoughts on why these valves face in and whether I can turn wheel around?