what year/model is your jeep? 4.0L I6 or jeeps 4cylinder?...just curious cuz some jeeps come with a D35 and some newer ones came with a D44.
The D30 wasnt ever designed for a large tire....like a 37.
The axle strength isnt just how big a tire it can turn, but how long it will last also.
These are just some things to think about:
-Wheel bearings are going to wear much faster
-the ball joints ARE going to be ate up like crazy.
-the stock breaks will no longer be a safe mode of slowing the vehicle. You will have to hammer the breaks hard, they will get real hot and warp the rotor and melt pads.... but thats ok because while you have the rotor off you can change the wheel bearings...and since you have the wheel bearings out you can change your outer front U-joints....and while you've got those out you can change the ball joints.
Not trying to be a dick, but there is nothing smart about running a 37 on a dana 30, especially if you plan on driving it mostly on the street.
If its not safe, its not cool...no matter how big and shiny it is.
