Just put some 35 mud tires on my 2wd does anybody if I should swap my rear diff gears it's a 2wd 4.6 f-150

 

It would'nt hurt but what gearing do you have already?

 

Not sure what stock gears are

 

Prob 3.55

 

You should be fine for 35's, I wouldn't.

 

All depends on how much money you have and if you tow a lot or haul heavy loads a lot you may want to but if the truck still feels like it has enough power for you then leave it be. Being 2wd it would be fairly cheap to swap gearing.