Hello! I was wondering if anyone had replaced their run flat tires on the last generation CTS, with standard tires. If so, what is the spare tire options? It seems the compartment for the tire accessories in the trunk is too shallow for even the smallest spare, not to mention the jack and lug wrench. I am having trouble finding replacement run flat tires in my size. Apparently there are only two current options, Goodyear and Bridgestone, the latter of which only lasted 28,000 miles. I don't really like the idea of taking up trunk space, but that appears to be the only option. Thanks!