After researching the lead lag ratios and deciding what size tires i could use i made my own wheel adapters. My front rims were a cobblejob when i first bought it and new rims were too expensive and almost impossible to find anyway. I bought 3/4" steel plate drilled and tapped everything to fit and today finished at last. I have a brand new set of tires and rims that were takeoffs from another newer kubota. They have the 6" on center bolt pattern and the 4 and 5/8 pilot hole. In the spring i'll put new shoes on my orange baby.