I have a 2002 330d Touring that when i bought it already had auto lights with HID bulbs fitted to the car. Up until recently the headlights were brilliant, and gave great vision in the dark, so good it was almost like main beam! Both front light now seem to have become much much dimmer and don't pick out the road ahead well at all, and it's almost like they point too low with it.
Can anyone offer any advice on a fix for this, maybe it is just degradation of the bulbs as i don't know how long they've been in the car? If a new set pf bulbs are the best starting point, any advice on which to replace them with?