motor, tubes(flats), tires(gashes) and wheels(tacoed). I'd suggest overloaded local trips in heinous conditions to discover what works and not discover far from home. You leave out your size/weight. If you were a light person who rides carefully the stock wheels might be perfect, if you're a heavy person who plows through things you might have to go over board on the rear wheel. Load up the bike with 75lbs of gear and go riding on dirt trails and in the rain. I bet you'll find out real quick what works.