I am running Goodyear 235/60R-14 on 66 ten spokes with no problems. I do recall, not sure these tires or not, but a time when they put the wheel and tire into a cage and pressurized really high to get the bead to seat. It was kind of scary to watch. It could have blown the wheel apart, but it worked and the tire seated on the bead.
Best of luck.
Cory