For running gravel roads I'd put a cheap set of CO-OP tires on it before I'd spring for Goodyears. The sets of Goodyears I ran when I was living in the land of dirt roads chipped and chunked badly on gravel. The cheap tires the COOP sold did the same thing but they cost half as much.
Guess what I'm getting at is IMO at 5k a year any tire will be dry rotted before you wear them out so I see no sense in buying expensive tires for it. If I was going to spring for a nicer set of treads for it Goodyears would be about the last brand I'd buy.
