As far as the tires go we moved up to LT285/70-17s. E-Rated Yokohama Geolander A/T. We had a leveling kit installed as well. We were thinking about adding a Banks power speedbrake to help with the downhill braking. Also considering moving to a 2018 3500, but the cost is a concern. Have read some not so hot reviews for all the 2018 makes, at least we know our TV and what has been done to it. We only have 60K miles on ours and know it is hardly broken in. Don’t want to get into a this truck vs that truck debate here.