Montana, Check out my Fugly truck. I run Cooper S/T 265 70's on the outside and Front and 235 80's on the inside. They are all about 32.7 inches in diameter. Not taller but wider. The 235 80 Coopers are really narrow tires....narrower than the stock Goodyears. The 265's will not fit side by side on the back without a 3/4 to 1 inch spacer. I you want to run anything besides stock you have to go at least with a different outside rim that might give you a wider spacing. 265's ride and look great. I wish I could have 6 instead of 4. If you find a 17"x 6" inch dually rim with wider spacing let me know. ks

 

i went to deantires.com and couldnt find an "STX" even using their internal search engine. closest i could find to what i want was the wildcat EXT, but that wasnt stock size (and the only 17" listed was a load rating C). have you got a link to the STX?
thanks,

 

i did, but couldnt find any pictures of the tires.

 

I messed up it's a SXT and it may be a Les Schwabe exclusive. Heres a link.
http://www.lesschwab.com/tires/light_suv/mt_sxt.html