I think every year leading into winter we're going to see a build up of used Camaros on the lots. Probably over 1/2 of the Camaros made are SSs or RSs and will have summer tires on them. I don't believe most of the consumers understand the expense involved in regards to tires if you live anywhere that's below 40%. They either have a backup vehicle or another set of wheels and tires that are all seasonal.
I haven't checked, but I bet you can buy a Mustang GT with all season tires.