Hey Waylon, well with my 250sx i put on the Mud tires linked below and they are excellent. Reasoning is because the bike will never lack for power, but it needs the traction. Also if you are on something soft just drop the pressure down to 2 or so and bam there you go and it goes all over the place. Not to mention the price is excellent.
http://www.rockymountainatv.co...Id=17501#vehicleSelect