Car Throttle published an article (or informative post) about Five Modifications That Ruin Performance. How many are you guilty of?  I think their title does not do the article justice though, it is five things that make your car dangerous to drive.

The top five most dangerous from their list include

• Excessive negative camber
• Stretched Tires
• Stiff Springs
• Zero ground clearance
• Drilled Rotors

You can read more about their findings on their site… but they went more than just saying they are ruining your performance, they actually explained the details as to WHY.