Hello! I ordered and delivered 2 Michelin Energy Saver Plus summer tires online. First of all, I was disturbed that both tyres have a different DOT number (1 week apart), but it doesn’t seem to be that bad? Both tyres have a bump in each case. I think that’s normal, isn’t it? In the case of the one tyre inside, there are also bubbles in several places where there seems to be air enclosed. If you press there, the material is in the places Is this normal? Is that a security risk? I sent photos to the dealer where I bought them. He said it was fine. When I called Michelin, however, the lady at the hotline said that I should rather return them. I also wrote an e-mail to Michelin. Answer was, I should send the tires for free check. But then I must wait forever… Because I didn’t want to wait that long, I ordered another 2 new types of the same type. On the 2nd delivery it was like this: both tyres with the same DOT. I was already pleased. But then the look in the inner jacket: On tyres 1: An approx. 3-4 mm large solid knob inside in the tire. In addition, 2 smaller ones near the Knubbel. Tyre 2: The bridges in the inner jacket, are interrupted in the middle on 2-3 cm around. E-mail to the dealer. The other one would be ok. Then came a replacement tyre. But he was 4 months older than the two. What should I do now? The tires from the very first delivery keep with the bubbles? Or send everything away and buy something completely different? I thought for example about the new Falken Sincere 832 EC…