There are better choices than the stock tires, If you ride a ton of mud then you want a open lug to help clean the mud out. Myself I fun hard pack and rock trails no mud. I run 26"x9"x 12" on all 4 corners. A043 SunF tires, they make a tread types. You can check out all brands of tires on Ebay.
FLOYD, SANDI & Sadie is the co-pilot. 05 660, 3000# VENOM WINCH, LED headlight Mod, 12' led light bar RZR seats, Resi shocks, SunF 26 X 9r X 12, CUSTOM PAINT(the rescue chopper can find us know)
"REMEMBER, SPEED KILLS, BUT IT WILL BE THE ONLY TIME YOU'LL DIE LAUGHING"