FWIW - on my '93 Pathfinder, I replaced the 31-10.50R15 tires - which wore out before they aged out - with a set of General Grabber 265/75R15s.
The old tires, which had a square-shoulder profile, would follow highway ruts and had a fairly harsh ride.
The new ones addressed both issues, and at .40 less OD & tread width, no negative influences; as an added bonus, less expensive, too.
(I don't drive it on sand dunes or rock-crawling or anything that requires the flotation tires.)