If you are good with bias-ply tires, Simple Tire has the Power King 6.50-16 in a load Range C (6 ply) at what I think is a reasonable price. That is what I dressed my '50 3100 in. They are a good looking tire, and are as close to the original as I could find--seems that no one is making the 6.00-16 anymore. They don't give a limousine ride, but what the hey, it isn't a limo anyway!