i got 22" itp sand stars, they hook up great and have the best side hilling for any sand tire, if your racing though, skat trak haulers no doubt. the sand stars are super cheap too. plus they look bitchin.
im a huge sand addict and the sand stars IMO are the best all around tire. i got mine on rims for $200, which i dont think is that bad. chevroned (v-shaped) tires are always better for side hilling, but the thing is they weigh more....but the ds has more than enough power to compensate for an extra pound or so. sand stars are the way to go. especially with pismo, its really loose sand there, its not tacky like glamis, which alwasy blew my mind because i thought the water woul make it stickier...but those dunes just eat you up.
dont think itll be an issue if your just tooling around the dunes. i actually got mine from a vendor down in glamis, but 252 for the pair seems a little high...plus you still have taxes and shipping...i duno that might be a good price thou. like i said mine were 200 for the pair, so just shop around.
prob cuz there not good draggin or hill shooting tires...o well i mean they all really do the same thing. just compare fact. skat trak is lighter and is amazing at racing straight, and sand stars are great at acutally dune riding and carving big bowls. but ive raced on my sand stars and beaten plenty of other quads with streaight paddles, and plenty of other quads have shown me up in the big dunes, so its really preference.
i got the 10s. they work nice and look cool...i duno if rims size is really gunna matter too much in the sand. i know with street tires and dirt it does, but you losing so much power because of the sand anyways i dont think itll matter.