If you're mostly driving it in NYC, don't bother. You don't want a even firmer ride, and trust me, stiff suspension in NY roads is a nightmare. Everytime we take the X3 to NYC, it's a huge PIA. My aunt was sitting in the backseat holding her full cup of coffee as we were driving through Queens, and she looked terrified that the coffee would spill any second. Plus, you won't look forward to replacing any pothole damaged wheels/tires or worse, stolen rims.