I am trying to find an ITP 589 m/s 25x10.00-12 tire. 51R321 is stamped on the sidewall. For my 06 machine. Is that particular size not made anymore. The closest I have found are 26s. I have 3 almost new ones, I got stuck and when I got pulled out, the right rear got ruined. Winch cable on other machine cut straight through it.