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Thread: H4 Bulb test conducted in U.K.

  1. #1
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    H4 Bulb test conducted in U.K.

    I have been told H4 headlamps were not/ are not legal in USA but they are commonplace in U.K. and other countries — this recent test

    https://www.autoexpress.co.uk/produc...bulbs-2022?amp

    by Autoexpress magazine in U.K. might be of interest to folks looking for bulbs on countries where legal. It seems these have undergone an objective test to refresh their bulb test of a few years ago.

    No allegiance

    Steve

  2. #2
    Lighting Specialist jaudette3's Avatar
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    Very, very interesting. I've asked Daniel Stern for his reaction to the test.

    Cheers,
    John
    Lighting Resources for Hardcore Air-Cooled Porsche Enthusiasts”
    ——-
    John Audette - Porsche Lighting Anorak
    AC Shop: BEST-IN-CLASS Air Cooled 911 Lighting Parts => 911BestInClass.com
    AC Site: The Air Cooled 911 Light Resource => AudetteCollection.com

  3. #3
    Lighting Specialist jaudette3's Avatar
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    Here's what Daniel Stern has to say about the Auto Express test:

    Years ago the AutoExpress tests were a terrific exemplar of rigourous,
    thorough, methodical, objective evaluation. They published detailed
    figures for each tested bulb—the filament geometry measurements, the
    intensity produced by the test headlamp with that bulb at the various
    relevant points, etc. The hyped-up bulbs (e.g., PIAA) were revealed as
    the worthless rip-off they are, and plenty of bulbs from legitimate
    makers came in for their share of demerits. All of it was presented in a
    manner easily accessible even to those who don't know a thing about
    headlamps or light measurement or anything like that.

    I assume they stopped doing that because it lost them too many
    advertisers; now they publish much more nebulous figures of merit, and
    give a much vaguer pass/fail on geometry, etc. And—surprise of
    surprises—whosever facility they just so happen to be using for a
    particular round of tests, that's (fasten your seatbelt) whose bulb
    wins! It's a totally random weird coincidence, I'm sure.

    To be much more concise: useless marketeering crapola. Click here to buy
    now from Amazon so we get our Amazon Affiliates commission!


    He's never been one to mince words. He says to stay tuned for some real tests he is conducting.

    Cheers,
    John
    Lighting Resources for Hardcore Air-Cooled Porsche Enthusiasts”
    ——-
    John Audette - Porsche Lighting Anorak
    AC Shop: BEST-IN-CLASS Air Cooled 911 Lighting Parts => 911BestInClass.com
    AC Site: The Air Cooled 911 Light Resource => AudetteCollection.com

  4. #4
    Senior Member StephenAcworth's Avatar
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    That's good to know, John!

    Quote Originally Posted by jaudette3 View Post
    Here's what Daniel Stern has to say about the Auto Express test:

    Years ago the AutoExpress tests were a terrific exemplar of rigourous,
    thorough, methodical, objective evaluation. They published detailed
    figures for each tested bulb—the filament geometry measurements, the
    intensity produced by the test headlamp with that bulb at the various
    relevant points, etc. The hyped-up bulbs (e.g., PIAA) were revealed as
    the worthless rip-off they are, and plenty of bulbs from legitimate
    makers came in for their share of demerits. All of it was presented in a
    manner easily accessible even to those who don't know a thing about
    headlamps or light measurement or anything like that.

    I assume they stopped doing that because it lost them too many
    advertisers; now they publish much more nebulous figures of merit, and
    give a much vaguer pass/fail on geometry, etc. And—surprise of
    surprises—whosever facility they just so happen to be using for a
    particular round of tests, that's (fasten your seatbelt) whose bulb
    wins! It's a totally random weird coincidence, I'm sure.

    To be much more concise: useless marketeering crapola. Click here to buy
    now from Amazon so we get our Amazon Affiliates commission!


    He's never been one to mince words. He says to stay tuned for some real tests he is conducting.

    Cheers,
    John
    1966 911 Coupe - Slate Grey - 304598 - still in restoration!

    Member #1616

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