I think I posted something about this a while back but can't seem to find it. I recently purchased a 7700 John Deere 4x4 tractor and I want to change the tire size on the back to a wider tire. I have a set of duals for it that appear to have never been put on. The tires that are currently on the tractor are 420/80/46 the duals that aren't on are 380/80/46 when I get new tires I want to go to like a 480/80/46. I don't remember what's on the front I can look tonight. My question is if I got wider in the back how will it affect the front tires? I don't want the back pushing faster than the front when I put it in 4x4. Has anyone else had an issue like this?