Lift kit?
 

While Dodge is my fav brand of truck, I've never really paid much attention to ground clearance on the 3500 4x4's, until I bought mine.

My truck seems to be REALLY tall. Previous owner put Goodyear 235's on the truck, and it still has a huge amount of clearance in the wheel wells.

There are spacer blocks on the rear axle that measure 4 1/2", but looking at front end, everything looks stock / normal.

Typing of taller tires, there maybe a 1/2 in. gap between the tires. I will put spacers on the rear before I ever hook a heavy trailer too it, but not quite sure how big a spacer I should install. Any suggestions if I want to safely haul max weight & not have tires rub?

The photo is somewhat of an optical illusion. The truck will fit in the garage seen in the background. I have to bump the front wall, remove trailer hitch, then shut the door from outside! At least it fits!

http://hermitscave.net/wp-content/uploads/dually.jpg

http://hermitscave.net/wp-content/uploads/dually2.jpg

So...235/85/16's? These are factory size tires on my 3500. No spacers required.

1998.5 stock size on door sticker is 215/85-R16

I ran the 235s on my 2 wheel drive and it sits way lower than that you can go bigger easily stock. These trucks sit high from the factory. and in my opinion you do not need spacers with your duals 235s are a narrow tire. I won't run them because I think they are dangerous. I ran that tire size fine on my dually but the max I ever hauled was about 38k pounds.:w2: