I thought about that but do you think there are other cracks? When you weld on a wheel is it like working on links in a log chain. If that link is weak, there are others. Do you think this could be a weakness in the wheel from the start that is just now showing up? Two wheel drive tractors were all there was for years and I used to see a lot of loaders on them. Were cracked wheels a problem on those? I have seen folks do stuff with loaders that I would not do so I know they were abused. How much would you gain in strength to go up a size on the tire and wheel?