a truck with dual tires weighs more than a truck with singles on all M939 models except a 923 or 925 in which case the A1 trucks weigh more than the A0s. Pretty screwed up chart.
An 809 series truck runs better IMO with dual 1100s on it. Maybe 1200s if you could get them. Super singles are ok but eh they have their drawbacks. You have one flat you are stuck. I wouldnt even think about going to 1600s on an NHC250 truck cause they just don't like all the weight. Tires are 330 plus whatever weight in the choice of wheel you want to run. Plus on an 809 series truck with 1600s if you chose to run HEMTT wheels you would have to install longer studs or get the recessed lug nut which are both cost consuming.
An 809 series truck runs better IMO with dual 1100s on it. Maybe 1200s if you could get them. Super singles are ok but eh they have their drawbacks. You have one flat you are stuck. I wouldnt even think about going to 1600s on an NHC250 truck cause they just don't like all the weight. Tires are 330 plus whatever weight in the choice of wheel you want to run. Plus on an 809 series truck with 1600s if you chose to run HEMTT wheels you would have to install longer studs or get the recessed lug nut which are both cost consuming.