Still having tire problems

[Bala]

Had the same issue with my Infiniti FX35 when I replaced good years with Yokos. It developed a flat spot when sitting overnight or over the weekend. Symptoms were exactly what you described. Had many wheel balancing and alignments done. Dealer checked the tie rods etc. Ran it for few k miles and broke the tie rod. Long story short It messed up the car so much I bought new set of good years. But, the damage was already done. Ended selling the car and tire are still in my garage.

Call the seller/manufacturer and trace the batch. Maybe faulty batch. I was also told that it could be that the tires are not rated for low temp and that causes them to develop temporary flat spot. I'd hear a muffled thump-thmup which went away when warmed up. But, gave my steering a good shake.