As far as staying within the maximum diameter variance of 3% (-0.1%), yes you can, but going to a 17" wheel on a 2014 may not work although there a couple members who have done it. Midway through the 2013 model year the brakes on all models were upgraded to slightly larger ones. I would suggest staying with 18" wheels. Are you considering Winter tires on the 17" wheels. Ae you looking to buy 17" or do you have them?
Peter