I've got 33x9.5's on mine for the winter and love them. Give you a couple more inches of ground clearance as well.
Now, if you want to float on the snow, you'll need 11.5" or wider. (9.5" cut through the snow and hit the ground). To me they are great all-year tires, however i would not use them for mudding. Everything else they handily outshine my bfg m/t km1's....

89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim