Spacers and tire ballast is available for that machine. You have to pay for them. Did you discuss price with the dealer?
Yes of course, I am open to pay for it, however the dealer told me that he does not have those items in the price list. I will try with another dealer perhaps or directly with Kubota, to double check that. Thank You for Your advice.
Have your tires filled, bolt on some high-quality wheel spacers like Bro-Tek, and put some weight on the back. I would not bolt on some questionable, cheap Chinese spacers off of EBay or Amazon. Good luck......