i have no clue here so i thought id ask someone here. i do mostly trail riding if that helps. the stock tires i have now are fine but since the rear end is so low i have trouble on rocks a whole lot, and they tend to spin a whole lot instead of grabbing. so id like to get some taller tires without having to buy new rims. i have an 01 baja if that helps any.

 

try 22" ITP Holeshots they work good

 

I recently put 20'' Raz'r 2's they are awesome, thet have worked well in every terrain I have been in so far. Now I dont know if they make 22" yet or not, another thing they are 6 ply so they are really puncture resistent. Plus they have raised yellow lettering on them which matched my black and yellow bomb awesomely.

 

Either one of those tires are good, and they make dozens of different styles. To answer your other question, you won't have to change rims. Your's are 9x9 if they are stock, and virtually every tire comes in a 9" rim size. If you want to clear obstacles easier, go with a 22" diameter tire. If you do that you may want to go with a smaller front sprocket, most people go with a 15 tooth, stock is a 16.

Justin