cewillis wrote:
The info above about your rear axle is good -- that is your 'absolute' upper load limit, and gives you room to upgrade wheels, tires, and springs.
You can also switch your wheels to those from a comparable year 3500 SRW. Those are 16x7, which can take 265x75R16E tires at ~3420 lbs max load.
For springs, I did this , because I wanted adjust-ability. A spring shop can add similar (without adjustable) for a lot less work, and maybe no more cost. My 2006 can be (and is) set to ride at stock height when carrying a total of just under 3000 lbs, with no noticeable sway or porpoise.
I strongly prefer steel to air, especially if any off-road travel is planned.
All kinds of advice is available -- up to you what you believe.
So you added top overload springs... that's pretty slick
