Although xenon is brighter than halogen headlights, some of xenon headlights maybe cause hyperflash problem.

Because xenon headlight is imcompatiable with BMC of cars.

Meanwhile, xenon kits also bigger size than halogen headlights.

Some people think halogen headlights not good because they are not brighter.

In the fact, standard halogen headlights are all brighter, which lumen can reach to 1500lm.

Only not good point for halogen headlights is warm lighting.