Post #4
I got Halfords "90% brighter" standard fit bulbs in H7 for the Focus which has rubbish standard headlights (Mk2 08 reg, last of the pre-facelift type). The Halfords bulbs did make a big improvement but one of them only lasted a few months and the other one followed it soon after. Lucky they were bought on a half price deal. Put standard ones back in and been good as gold ever since, just having to put up with useless headlamps but at least they work. Don't know why as these upgrades claim to run cooler and not use any more current. BTW the Rallye standard (P2) headlights leave the Focus standard ones for dead.
If I could find similar that would last more than 5 minutes I'd put them in both our cars.
Ring have a good rep, Philips and Osram also do upgrades - found this site...
http://www.phoenixautobulbs.co.uk/ct/popular-bulbs/
I'd be interested to know which are the best too - all I can say is from my experience Halfords aren't!
<edit> It says here http://www.powerbulbs.com/blog/ that Philips X-Treme Power, which delivers 80% more light than standard, won ‘Auto Express Best Buy’ for the last three years.
Here is Auto Express test: http://www.autoexpress.co.uk/products/products/243109/bulbs_we_test_30.html
A related question - do Phase 3 crystal headlamps give better light output than the Phase 2 type on my Rallye?
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Cherry Rallye SOLD