Tire Blowout problems of the 2007 Chevrolet HHR

My right driver's side tire failed and blew out in 3 places causing my vehicle to slam into concrete guardrails while I was on the inside corner of the highway and raining. The tire had what was told as an egg develop inside the tire bursting out. My insurance company has followed through with subjugation towards gm to find out why the tired failed; just that they replaced the tire and still have not been able to receive pictures of the tire nor how the tire was disposed. Gm should have paid for this as it was a factory tire that failed and could have injured me worse; even caused a fatal accident. I have no police report but had 3 jso jacksonville, FL officers stop and none of them helped me with this matter and never called anyone back to help me. I am concerned that there may be more firestone tires out there like mine and holding gm responsible for responding back to me as to why it has not been addressed. Tire was replaced with identical model.