I going to buy a Polaris sportsman 500 1998 but it has bald tires I mostly will be riding on dirt roads trails through the woods mud and sandy creeks muddy ditches I don't want to rob a lot of power but need something more aggressive than a trail Woolf like on my other ATV

 

Bang for your buck is the ITP Mudlites. If you still have the 10" rear rims your tire choices will be much more limited.

 

or bearclaw

 

the BKT w207 is a good one not to aggressive but gets the job done

 

We have had great luck with the GPS tires. Best prices and many to choose from. Sun F tire Plus they have a run flat we purchased for the Desert, no more flats.

 

I have been running CST Ancla tires, they have been great for sand, trail and mud.