We have 1,100 miles on our '22 Yukon XL (built 5/22 and delivered 11/22) and I took it in to the nearest GMC dealer yesterday to get the DRL recall reflash done and also mentioned that the tires just don't seem right - I mentioned flat spots and road force balancing. Unfortunately I could tell from the get-go that GMC dealership didn't really want to bother with it. They said they tested the balance on the tires, added 1 ounce of weight to the fronts and called it good. I couldn't get a straight answer out of the service advisor whether or not they road force tested them.
On the drive home it was the same experience. Higher amplitude thumping in the 40's to 50's - tolerable in the 60's and above 70 shaking in the driver seat and a bit in the steering wheel. I have a good friend that works at an independent auto shop local to me and I stopped by to see what he thought. We pulled it in, put it on the lift and tested the tires. They use a Hunter Roadforce Elite balancer and the tires came out at 99+lbs of force! The machine basically gave an error and said the tires exceeded the limit of being correctable.
My friend took some pictures of the tires, (DOT codes, build date, etc.) and got on the phone with Michelin. After a bit of discussion Michelin said they would warranty the tires and to make the situation right they would upgrade me to the Defender LTX (OE tire was Primacy LTX) 80K vs 55K warranty, respectively. TIres are on order and I should have them replaced early next week.
Kuddos to Michelin for making it right - I've always been a Michelin fan and they reaffirmed why I buy their tires. Also, kuddos to my local shop for being willing to look into it and do the warranty leg work with Michelin.