Scott, everything that I have read online says 0.05" is maximum acceptable runout. The front tires spun true, and the manager said the new rear tires spun true also. The warranty form going back to Michelin has the DOT serial numbers of the tires, so I'm sure they will go back and look up lot, batch, etc. They are 4614 dates codes and made in USA.
Ben, there are no yellow and red dots on the tires, maybe they got cleaned off with the mounting lubricant, so no way to check what you mention. The tires were only on for a week, so no curb impacts and the rims were true. Again, the front tires were fine it was only the rears. Supoosedly they layer tread compounds to combat tread block squirm, and I can tell you they don't feel squishy handling under a load. The previous pair of Michelins were about 2/3 worn and the wet traction just "went away". Same thing that happened to the LTX/MS when I had them on the burb.
Agree about Michelin not being the company it once was, but every tire Goodyear had in this size was over $300. I want quality, but sadly there is a limit to my resources....
Swapping the tires for a different pair where the tread grooves spun true fixed the vibration issue, so I can only conclude the tires were defective. Good point about the balancing machine lightfoot, the tech probably never saw the runout with the hood closed, even though the tire is still coasting down when the hood is opened. Who knows how many tires have runout like this? Maybe other cars aren't as sensitive to it? But I know if I spend almost a large for a new set of tires, I want a smooth ride.