I just went from Boggers to Grapplers and got a new noise i wasnt able to hear before, when im cruising at 50-60 and let off the gas in OD i can hear what is almost a scraping/humming sound. it stops when it drops below 50 and the exhaust is to loud to hear if it does it in 3rd gear or not. I know its not coming form the exhaust i can the idle down noise from that also. anyone whos done a tire swap like that or had a similar issue? im thinking maybe U joints?

 

could be u joints, pinion bearings or gears. did you start hearing it immediately after the new tires got put on? if so then make sure the lug nuts are tight. if it were the tires then you would hear it all the time and the noise would increase with speed.
can you tell exactly where it is coming from?

 

yeah pretty much immediately but its onyl at 50-60mph and the wheels have been re-torqued.

 

Shot in the dark but maybe the brakes cause you said scraping/humming...