your best bet is pick up a set of 20" wheels from kijiji that come stock on a limited if thats what you want, your winter tires are not going to be cheap tho. I have a 2013 sport also, i picked up some 18's off kijiji from a 2008, i put a set of bridgestone blizzak dmv-1 tires on it and also added the correct tire pressure sensors for the 2011+. The tires, balancing, and tpms when all said and done ran me 1350. The 18's ran me 400. The only thing you need to do to make the 18's fit the 2011+ model is get a set of hub centric rings to fit the smaller hub. IMO its cheaper to go with the 18's, i bought myself some plastidip and am going to spray the wheels black, so it should look fairly decent with the black grill on the sport and all. good luck