I am interested in knowing whether anyone has tried swapping out the original low beam headlight bulbs in their S90 or V90 ? I understand our vehicles have the H11 as the low beam headlight bulb. It's pretty common for owners to swap out the H11 bulbs in favor of the brighter H9 bulbs. Some people have mentioned that the H9 burns too hot for some headlight assembly's and some also mention the shorter bulb life of the H9's but everyone prefers their superior illumination. I previously owned a Genesis sedan that I did that with and drove it to 60,000 miles before having to replace a burned out bulb. Also never had any issues with the H9 bulb burning too bright for the Genesis sedan headlight assembly. Their superior illumination was an obvious improvement. I have a 2018 S90 that I am interested in upgrading to the low beam H9 bulbs but wondered if anyone has tried it yet and if so whether they've had any problems?