You might double check that a little deeper., That truck is only rated at 6k on the rear axle, just like all the gassers. NOT 6.5k rear axle like all CC and QC trucks which the OP has.
Per DOT 17" tires have a max rating of 3195 lbs per tire, not adequate for a HD diesel application. The Tradesman 2500 Reg Cab is a gasser platform with a diesel, a bastardization to cater to a market niche.
17's only come on the DRW's because they have 4 tires to meet the ratings, essentially gasser platform for anything less than a 3500 DRW platform. Really, a 245\70 tire is doughnut, on a diesel it is inadequate for the engine weight. While they might fit the OP's truck, not a good application choice.
I wasn’t the one that said “17’s are now gasser only rims”........you were.
I disproved you, and you go straight into argumentative mode. The front axle is rated at 5,750 lbs and the rear axle is rated at 6,000 lbs for a grand total of 11,750 lbs; the truck has a 10,000 lb GVWR.
The Firestone Transforce HT tires in LT245/70R17’s in this exact case are rated at 3,000 lbs each......3,000 * 4 = 12,000 lbs, again, more than enough to exceed the combined GAWR of 11,750 lbs and the GVWR of 10,000 lbs.
It’s really refreshing to hear you toot your horn and know more than the engineers at RAM as well as know more than the legal department at RAM regarding FAWR, RAWR, GVWR, etc.
The axle ratings are somewhat arbitrary in nature as the axle rating is ultimately determined by the tire and wheel package that are under it. I’ll bet a frog’s phatttt assssssss that the regular cab truck I linked to has the same 11.50” AAM under it that a 2500 regular cab, 2500 Crew Cab short bed, 2500 Crew Cab long bed, or 2500 Mega Cab has.
And....the last I checked, RAM dual rear wheel trucks have six tires and wheels total, not four.