As Maniac mentioned, you can reduce the weight of the car by putting different wheels on it. I reduced the unsprung weight of mine by 40 lbs switching to the Foose wheels I now have versus the factory diamond cut that were on it. The Pirelli tires have excellent grip and cornering capability.

 

Those look really good. How much do they weigh individually compared to your original ones? Also did you notice any improvement with them?

 

And does anyone know how much my factory wheels weigh individually? Mine look like these: