Tim,
Not too concerned about the tow rig tires. They are 245/75R16E Coopers @80PSI.
What concerns me is the trailer tires, they are only 7x14.5 towmasters. I really need 8x14.5s but the prick that built the trailer only dropped the axles far enough for the 7s to fit /forums/images/graemlins/angryfire.gif.
I told him I wanted the trailer for 10K GVW, he should have know better. Current tires only give me a GVW of about 7300lbs. Dodge weights 6900lbs alone, you do the math.
Dodge would be faster tow rig, but not easier. The K3500 rides/handles much better. Much more comfortable interior.
In the past we made this same run, similar setup. That unit was a '94 GMC ext cab short bed K1500 (/forums/images/graemlins/yikes.gif), 6.5TD/4L80E/3.42s. Had a different 8.5' camper in the bed, same trailer with '79 1 ton longbed with 35s, 8" lift and 454. I think this truck will handle it better /forums/images/graemlins/waytogo.gif.
The '94 had E rated 16s as well.