My apologies to you Don.. my post count being so important to me, I missed that he used Radial approved rims. At least 6 inches wide no other anomalies concerning the rims or the tires. This is a science, and if you take shortcuts, it won't work. If you do it the way a gazillion others do, you win.
The way I WIN is to purchase modern radial rims. They were not made in 1950, they were made in 2014 using the vintage spec but modernized to work properly. Wheelsmith.
Post Count really? Amazing! Keep up the good work Don.