Yes, our 2012 Ram 2500HD Cummins came with Michelin LT265/70R17E tires. Saved me having to stop and get these after driving off the dealer's lot.
These tires will be at least four years old in June. (Currently in the UK so can not read the date codes). Truck has about 32,000 miles. So time is the criteria. I know the truck sat outside on the dealer lot through the summer and into the winter when I bought it. So starting with a new set this year, I will know the complete actual tire history going forward.
I have to contend with the mountains when leaving our home location. Good tires are a necessity. If I lived in Kansas (would's largest aircraft carrier being basically flat) and never went in the mountains, one could consider running tires for a longer period of time.
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC
TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell
2014 31' Classic model 30 twin beds, 50 amp service, 900 watt solar system, Centramatics, Dill TPMS, disc brakes, 16" tires & wheels