Can the Chevy Spark EV heat and cool the main battery when not pluged in, or does it have to be pluged in?
The front and rear wheels for the 2014-16 Spark EV are different. This is because the battery pack is seated in the rear giving the rear axle more load. You should verify this but the doc I'm looking at is:
Front15x6.0ET45Part number 95024486
Rear15x6.5ET54Part number 95024487
You should press +, to see rear wheels specification.
...not sure on what’s the best / biggest / widest / maximum tires or rims will fit your car?
Write about the tires you are currently driving on.