I see talk about 20" tires. the ram I am looking at comes with LT285/60R20E OWL tires. are these as good for towing as 18" both are E rated, but I do see a shorter sidewall
Personally, I'm not a fan of short sidewall tires. Have them on our VW and though it doesn't ride bade, I think a taller sidewall would ride better.. Sorry, can't speak for truck tires w/ shorter sidewalls.