what size tire?Actually one of the main reasons tractor lugs on farm tractors are made the way they are is the wear factor,the cleats up the side of the tire shown and on most ATV tires provide extra traction when when the tire starts to dig into the ground plus they provide sidways traction on hills.Wish I could find some of the ATV lug designs for my 25-40 HP tractors
I'd beg to differ on the bit about 8" rims. 8" rim will fit quite well on our Gravely 35-G. It currently has 10" rims but as the hubs are the same size as used on the 2 wheel tractors that Gravely built, they would fit.First off they are 8" tires, nothing that uses 8" rims can be called a tractor and chances are that the transaxle won't hold up with that much bite. Not even for one turn,,,,,,,, which is about all you're going to get before the lugs fill up. On an ATV you can spin them fast enough to clean, on a "tractor application chances are that's not gonna happen.
There are reasons Ag tires have the cleats arranged the way they are, years of experimenting have determined that tread pattern works.