The same principal as all gas cruze models only having a 16in doughnut and the car coming with 16in,17in and 18in stock wheels. Its not the rim size that matters, its the overall tire diameter. Larger rims have lower profile rubber so the tire diameter is the same no matter which wheels you cruze came equipped with.Is the Verano spare a 16 inch doughnut? How would that work if especially on the front? Just curious.
My gas cruze came with a compact spare, I sold it for $100 plus traded for the ECO trunk liner and inflator kit. I then used $75 of that money to get a closeout 16in rim from tirerack.com(same size as my cruze came with). I then just paid the tireshop to install one of my old tires when I got new ones.If you want a spare that you can drive on like normal you need to get a full size spare with a properly sized tire as well...