My wife's car, it was a special order but we didn't think the $900 light upgrade option was worth it. She just couldn't see driving at night. I tried everything but at last tried the PIAA Night Tech Halogen bulbs. They produce significantly more light and don't violate the BMW power monitor computer. I had tried LED bulbs but they didn't draw enough current and the car thought the bulbs were blown. More wattage bulbs draw too much power and this is a violation of the power computer. The PIAA bulbs produce more light without violating the power computer. Perfect.