I have a b5100 in horrific condition,the wheels a red rotten.Just wondering has anyone found an alternative to buying new kubota wheels,ie are some japanese car wheels a similar size to take kubota hubs .I noticed the nissan navarra is 15" and 6 stud.I have no problem with performing mods or machining to make it work.Any thoughts or ideas very welcome.I cant justify spending big money on this poor old tractor but I am willing to invest a lot of time in coming with a novel way in getting her rolling again.no idea too crazy..tnx