I don't buy that the tires are dry rotted. Why would that only happen to the front tires for one, and for two - in EXACTLY the same place in a perfect line? Plus the buggy is parked under an awning out of the sun when it's not being driven.
I found out after digging, that the mfg discontinued these tires for a period of time not long after we purchased them. Hmm...wonder why that might be? Then they brought them back again late last year.
We did go ahead and purchase another set, so let's see how it goes. Still not happy with how they handled our original complaint, but we are kinda between a rock and a hard place as to where to get other tires the same size. So since they did discontinue and then bring them back, we shall see if they fixed the flaws they admitted to - and they did admit to flaws, although not the ones we found.
And just for the record, we were driving down a paved access road, about 1/10 of a mile long, no road hazards whatsoever last week - and a new hole blew in the right front. Sounded like a shot, and the tire was flat in an instant. It took 5 tire plugs to fill it. Our plan was to stay on a well used dirt track, nothing to put any stress on the tires, to just go to a spring and watch for wildlife coming in to drink. We didn't even get out of the driveway, basically. No, I don't buy that the tires are weather checked, when they are blowing holes continually where the lug meets the carcass. Lloyd said if he could hit road hazards in exactly the same location that many times over and over again, he needs to go buy lottery tickets.
The two front tires are toast, but the two rear ones will be held onto for spares.
Stay tuned.