My neighbors operate their own trucking service. He runs a class 8 tractor flatbed and she runs both 4500 Dodge/Rams with 19.5" tires. They use Sailun tires on all their trucks.
I notice her newer Ram 4500 has Sailuns with a tread pattern that looks like the S740 tire.
Horse show folks with those very hitch heavy LEQ trailers use 4500/5500 tow vehicles with 19.5" tires. I see the Sailuns are popular with those folks. Check out some of those forums.
"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers
'03 2500 QC Dodge/Cummins HO 3.73 6 speed manual Jacobs Westach
'97 Park Avanue 28' 5er 11200 two slides