Bought new by my dad, and just recently the keys were passed on to me. So far, so good.
2009 Hyundai Sonata (Gray)
K&N Air Filter, Cold-air Intake
LED Under-seat lighting (blue), Dynamat applied to all doors and trunk/rear seat backs, stock interior lights (door, headliner) replaced with LED bulbs (white)
LED Head/Tail Lights
A pair of 12 inch subwoofers in separate ported boxes, Alpine MRP-M500 amp, 4/0 Gauge wiring kit, Kenwood & Alpine speakers installed in all doors/pillars
Wheel and Tire
Kuhmo Ecsta tires, Cross-drilled EBM brake rotors