Does anyone know what tires I can switch to on my RAM 3500 to increase my rear load capacity so I don't screw up the torque and trailer tow ratings. I have a 4.10 gear ratio on my RAM 3500 with Michelin LTX/MS2 LT265/70R17E 121R tires rated for 3200LBs each in SRW configuration for a total of 6400LBs. If I had a dually, my total tire load capacity would be 1190LBs. As of 2013, this was the maximum weight load I could find in a 17" tire and I didn't find anything better in the 18" tires. It was suggested that I move up to 19 or 19.5" low profile tires and I was told my RAM ride would be very hard. Would my rear bags soften the ride sufficiently?

The only solution I can come up with, is to keep the same outer tire circumference so as not to screw up my torque and trailer tow ratings.

Anybody have a similar situation or know enough about tires to help me.

Thanks

P.S. If I switch tires, I would have 4 x 17" rims to sell