I just bought my CTS V last Thursday. I have heard that the stock tires last anywhere from 7k to 17k, usually around 12k.
I have a question. If you go to "regular" tires, can you still use the tire pressure monitor system? Otherwise you would have the stupid idiot light staying on. What are the spare options?
I live in Utah where you can still get a decent snow storm as late as April or early as September. That is in the valley. I'm considering the Mich Pilot A/S. Still a very capable performance tire with all season capability. I may also buy winter tires for Nov-Mar.
I love the EMT safety feature and the tire pressure monitoring system. Just not the tread life for a $300 tire. If you race your car or drive it real hard, 10k sounds about right. Otherwise, I believe it should last at least 20k.