I have a 99 Prairie 300 as well. I installed the 26" ITP 589s. They are a very aggresive tire and I get alot of compliments. I am not sure how well they would work without a lift kit, as my atv does have a lift. I chose the 589s because they seemed to be much more durable than the Mudlites. Granted the 589s are significantly heavier, I typically don't drive very fast. I am usually hauling deer corn and cruising around the lease (~20 mph). You can look at my profile on here and see some pics of my atv. Good luck on your decision.

 

Nicwe looking machine. What's the width on the front tires?