[wiredgeorge]

All the info gathered here has been great. If it were me and I would suppose the tires have different, perhaps vastly different, manufacture dates, I would purchase four Carlisle Radial Trail HD tires in the correct size and be done with it. I would use the best, non Trailer King tire with the latest manufacture date for a spare. The tire mess you have is going to be hard to diagnose so new tires are likely the answer.