my 4.0 OHV and a 5 speed auto could spin the tires with my 33x12.5x15's and stock 3.73 gears.....

 

im bouncing the 285/75r16's with 4.10's and its ok....i mean nothing like a ferrari or anything, but it scoots ok... when i go to durty fives im most likely going to plop in some 4.88's, i know the math says 4.21, and 4.56 is the next closest, but ive heard of people wishing that they had more juice when running 35's and 4.56's....but never heard boo about the 4.88/35 combo....and besides one your up in the durty fives, fuel milleage is a thing of the past any ways....so its all about more power!

 

ive have never just break the tires loose unless its wet or loose dirt. on normal pavement it takes some brake work.

 

4.56