They are pretty mild mannered on the road and highway. There is a little tire whine decelerating to a stop but I didn't notice anything migraine inducing as Darren put it.
Some info from the rims that came off the 1964. We were pretty sure the black rims had been swapped out later in the trucks life but, once we had the tires off, it was clear they had been swapped. There was a mix of 1971 and 1973.
These are all riveted drum brake rims. On the welded disc brake rims, the date code is on the outside.