On second thought, I DO have some things to add.
I'm surprised GM would approve tires that crack at low temperatures. I'll bet they didn't know nor had a test as part of the qualification program.
I'm surprised Goodyear would source an OE tire that would do that. I'll bet they didn't expect that and I wonder if they even suspected that would happen.
Nevertheless, this is going to be expensive - mostly for Goodyear. AND someone is likely to lose their job over this.
I'm surprised GM would approve tires that crack at low temperatures. I'll bet they didn't know nor had a test as part of the qualification program.
I'm surprised Goodyear would source an OE tire that would do that. I'll bet they didn't expect that and I wonder if they even suspected that would happen.
Nevertheless, this is going to be expensive - mostly for Goodyear. AND someone is likely to lose their job over this.