The 200 per cent-brighter Halfords Advanced bulb managed an improvement of 185 per cent in the FOM assessment over the ...

Having two compliant bulbs was an improvement over the H7 result, but there was still no ... The result is that the brightest spot is down on the best, but it pipped our winner for beam width.

We tested the low-beam performance of single-filament (9003) and dual-filament (H7) bulbs from GE, Hella, Philips, and Sylvania, and PIAA's dual-filament bulb. We also compared their performance ...