ebay, craigslist (you can make a search and it will send you an email on what shows up....in LA, SD, PHX, SLC).
I sent a text to my nephew. He is in Lakewood...Or SW Denver....Oh, wrong Lakewood. He collects junk and rebuilds ATCs and etc.
Since you didn't say anything about dune capability, I'll throw out a choice that is not dune capable....
https://powersports.honda.com/street/dual-sport/trail125-abs
Is that ur truck in the back? Did you actually go from BFGs to Goodyears....dumbest thing I ever heard.
Put those back on and in 50K pull them off. They are one of the best tires out there.