18" MSR Style 044 Rims w/ Nitto NeoGen 225/40 18 Rubber - the rims are beat to crap, but the price was right, and I'll Plasti-Dip them gloss black one of these days (Have the kit, just haven't had the time).
After tinkering with the idea of gutting the intake assembly, I managed to rig myself up a SRI. I liked the sound, and could tell there was a little more response in the throttle, but the idea of it sucking HOT AIR into the engine really bothered me... so I did some CAI research.
I ended up going with:
AEM Cold Air Intake for 2011-2013 1.8L Elantra (yes, it fits the 2.0L)