push back trying to get Michelin XPS RIB installed

Jayco is now putting the Goodyear Endurance ST on their new 5th wheels. At a show last Saturday I saw a Pinnacle with the Endurance ST's on it. I asked the factory rep about them and he went on and on about how great they were. But they used to put Marathons on stock a few years ago and that didn't end well. I did put the Endurance ST's on my Cougar 5er about 8 months and 5000 miles ago. So far so good.