Chunks are ripping off the inner and outer parts of the front passenger tire and just the inner part the front driver side tire.Is this on the inside of the tire? Check wheel well chassis and if there is a rubbed polished metal mark anywhere inside the well/liner. But it almost looks like the metal shield is ripping into the tire. Not a good sign.
Looks like you need new steering bumper stops, or get spacers, or replace with narrower tires (225/40/18)
Michelin Pilot A/S tires? 2 of them with the same condition? Hmmm. Something sounds fishy. How many miles since they began looking like this? Was there a tire rotation in that time period?...but a defective tire is causing the problem. What are the odds of both my front tires being defective. Could that seriously be the problem?