I read the tale of the man who blew-out his tire against a curb. I wonder what the anticipated lifespan of the factory-issued Goodyear tires should be. I have 24,000 miles on the original tires. Tread wear is even, but not much for winter traction. I plan to replace the set with Michelin X-Ice for year-round service in the mountains. I wonder what experiences other Volt owners have endured. BTW: I have run the rims out of remote wilderness areas when one of my previous vehicles blew a tire. No cell phone coverage. If you are not dependent on dealerships, I can not imagine there being any shortage of available replacement tires for a Volt. I like Big O Tire myself for inventory.