Guys,
I put 31X10.50R15 tires on the rear of my 1950 3100 pickup. The fronts are still the 235-75X15s which came with the truck.
Using the 31-inch (Actually 30.6" rolling dia.) tires instead of the original 28-inch (27.6") is the same as going from a 4.11 to a 3.90 gearset. RPM at 60 dropped from 3000 to 2700. If you have a '54 it is equivalent to a 3.51 rear.
I checked for possible interference before and after installation and didn't see anything. The front might be a problem. The truck looks better than stock to me.
Bill
