I'm by no means a sand or paddle tire expert, but I have found that there are a lot of variables that come into play. From what I've seen rider weight, type of sand, paddle design, number of paddles, and tire size all play a factor. The best thing I can say is to see what others are using where you plan to ride and if you're getting a custom tire done, give them as much info you can and listen to their recommendations. Also doesn't hurt to have a spare rim and tire.