I just flat-towed a '59 C60 Viking about 60 miles this past weekend. I disconnected the driveshaft and didn't exceed 35mph during the trip. I towed it with my '11 F150. Didn't have any issues other than 3 of the tires shedding their tread at various stages along the way...lol. The truck had been parked in a shed for 33 years. All 6 tires were still up - I was shocked.

1950 4100 - unrestored and driven weekly for almost no reason at all.