I have a 07 L2800, Rear are R4s 15X19.5 and front are 27X8.5 15. I have the V-Bar chains on the rear, and front. When I bought the chains I would get a tick from the chain hitting the rear fender on my right side only. I just took my hand and pulled the fender out a little and it seemed to solved the problem. I put my chains on in November, and take them off usually in April. I cut all my wood for the following year so the chains are really working in the woods plus plowing snow. The front are no problem at all. The tractor is like a bulldozer with the chains on, you cant stop it.