You're going to have 2 problems with changing your wheels.
The 1st will be the pinion factor has changed. The smaller wheels will cause the speedometer to read incorrectly and also your odometer to read wrong. You may be putting miles on your car that aren't really there.
This can be fixed by changing the pinion factor in the controller. You will need a dealer to do this or someone with access to a Star Scan .
The 2nd will be the loss of the TPMS sensors on all 4 wheels. This has the potential to cause the most problems. the controller may compensate by changing fuel, timing and/or shift patterns. At the very minimum, the "service tires soon" light will come on as well as the "check engine" light.
I would leave the wheels alone, it may be cheaper to do that.