We headed to the light tunnel at Osram’s HID centre in Berlin to find out. We used the same formula as we do for rating halogen bulbs, combining output measured at 50 and 75 metres in front of ...
Halfords’ bulb did claw back some credibility with its long throw. Osram’s Night Breaker suffered similar problems to the above two. The difference between the two bulbs was not just in the ...