I purchased online at Tractor Supply an AGKNX Cat 2 heavy duty quick hitch ($490) to put on my Deutz 5080D since it doesn't have the extendable lift arms and love it. It's a bit pricey but built extremely solid.
Going between my Woods Brush Bull 720, a heavy 9 ft back blade and assorted hay...
My tire guy hates Rim Guard. He comments that Rim Guard is so thick and viscous that with a larger tractor it can take most of a day to pump a tire out to repair it and refill it. It is very sticky and difficult to handle for a repair reuse situation. I will have to ask him about using RV...
Next set of tires on my Kubota MX5100 will be R14's. I have a farm and use the tractor for moving round bales, feeding cows and handling manure. My present R4 tires are great for moving bales, okay for feeding cows but have a lot of problems in the winter with mud and manure around the feeders...