tire question

i have some 18s in the shed and i personally dont care for them. i like the way it looks but you get hung up easy on rocks and ruts. plus my top speed is like 35-40 mph with 13/42 gearing.
 
i am running stock fronts with 18in turf tamers in the rear. with stock gearing it is slow but i just ordered a 15 tooth front. once i get it rebuilt i will find out how fast she is. i think the 18s look really good on the smaller blaster. IMO