Front or rear tires/rims?? I think (but am not sure) that the rears are a 24" rim. With 4wd you will need to make sure your rolling circumference (roughly equal to circumference) ratio front to back is the same as original if you change tires or rims. Hopefully someone with the same tractor as you can just measure theirs for you. If needed I have a set of rice tires in great shape on 22' Yanmar rims from a YM1500. But I think these are likely too small for you. Data on rolling circumference can usually be found on the tire manufacturer's web sight. Good luck.