Just did my first mods to my 2011... Found this forum and thought you may like them. Nothing big, butI think they help a lot.
First, my Stock tires had 56K on them and were just about bald... so I put my favorites on - General Altimax Arctic. In a bit larger size - 225/45 R17. I love rally so I think these are a perfect fit..
Next, out with the stock speakers - and in with a full set of Infinity Reference...
I also added an Infinity Basslink in the trunk... Thanks to some instructions I found on here on tapping into the rear speakers... worked perfectly and is a completely invisible addition.