Buying a 2015 gmc denali 3500 srw crew...door plate has rear axle rating at 7050...can't find out how much of the truck wt is on rear axle...can't weight it till I buy it...is there a rule of thumb fo...
RAM trucks has a fun "Towing Guide" on their page. It isn't axle specific, but it still shows payload capabilities and towing capabilities by Truck Configuration and Trim Level. RAM Towing Guide. Make sure you select the Heavy Duty line of trucks since that's what you're looking for.