Another one for the 'crazy mud tires.' I'm a huge fan of the 22" mud lites in the rear. Aggressive tread grips anything and has no problem keeping up on 4x4 trails (which is where I do a lot of my riding), have found them to be very durable, AND they're way lighter than any similar tread pattern which is key on the blaster. I've converted many friends with blasters, 400ex, raptors, etc. Most guys with 4x4 quads run them already! For the rough and variable terrain here in the New England area they're one of if not the best all around tires for sure.
When I got this blaster it had 20" holeshots, and although I think that they're good for what they were designed for, that's not the type of riding I do, so I sold them to a guy that had a dirt track in his back yard, and I'm sure he loves them.