Just came across this thread and I was able to find this page for the OEM GM spare based on your model. Here's the page with the part number for reference https://www.gmpartsprime.com/oem/gm-wheel_alloy-92457030.htmlSo I have been looking through the forums and I can't find an exact answer. My SS didn't come with the full size spare, but I would like one for a decent price. I don't care what the wheel looks like as long as I can fit it on the front and the rear on my 2014 SS (with CTS-V rear brake caliper/rotor upgrade). My plan is to have something better than a donut while avoiding the price of an Alcoa Wheel. I would only use it to get me home so I can then get a new tire for the regular wheel. Looks do not matter just functionality. I am lowered on Eibachs so my biggest concern is the offset that can fit both and not rub. Also a good tire size for both would help. Remember this is temporary so as long as it gets me home I don't care if it is not perfect.
Rec. Tire Size:275/35-19
I found one with these specs above do you guys think this will work all around?