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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 09-13-2019, 09:10 PM
astroanalyst astroanalyst is offline
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Replacing H& fog light

Is it a bad idea to replace my H7 bulbs in the fog lights with these LED's??


I heard they can run hot because they are enclosed in a canaster.
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  #2  
Old 09-13-2019, 09:17 PM
CSMBlack-540i CSMBlack-540i is offline
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Bad idea is in the eye of the beholder. People seem to want white lights these days for fog lights which do absolutely nothing but reflect light in real fog.

Once you replace true yellow fog lights with white LEDs they become driving lights and reflect off fog when driving in it.

As far as heat, halogen H7 produce more heat than LEDs. Whether the LEDs last really depends on the quality of the LEDs, drivers and heat sinks to dissipate the heat that's generated.
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Old 09-14-2019, 10:03 AM
astroanalyst astroanalyst is offline
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thank you for your reply... I ordered them a few days back so I'll try them as long as they don't damage anything. They are supposedly almost 3x brighter and we don't get much fog on Long Island. My car enthusiast friend is totally against them but I like the way the old ones lit up the floor when driving. I thought brighter would be better....but time will tell. thanks again.
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Old 09-14-2019, 06:04 PM
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there is a lower wattage (i believe its a 35w equivalent led vs the 55w equivalent) thatll replace the H7 if youre just looking for using the fogs as a DRL. thats what i do, fog isnt an issue round here either.
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Old 09-15-2019, 09:08 PM
astroanalyst astroanalyst is offline
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I just replaced them and from inside the car you can barely notice them being on or off. From outside the car they make the 20 year old 528i look a little newer but it doesn't give much functionality.
Overall I'm happy with them but they are certainly NOT brighter like the lumens suggest.
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Old 09-16-2019, 12:57 AM
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Burning2nd Burning2nd is offline
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i put 55w HID's with the yellowest bulb i could get... its like 2800k or something..

very bright, very yellow

and the HID ballast dont give you a fog lamp out error..

the leds will unless they are specifically error free, OUR lcm's dont like that
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Old 09-16-2019, 08:18 AM
CSMBlack-540i CSMBlack-540i is offline
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Quote:
Originally Posted by astroanalyst View Post
I just replaced them and from inside the car you can barely notice them being on or off. From outside the car they make the 20 year old 528i look a little newer but it doesn't give much functionality.
Overall I'm happy with them but they are certainly NOT brighter like the lumens suggest.
That's exactly why my first post stated
Quote:
Bad idea is in the eye of the beholder. People seem to want white lights these days for fog lights which do absolutely nothing but reflect light in real fog.
I'd much prefer functionality over aesthetics even if there is little fog in my area. You never know if you're doing a road trip to an area that does have fog.
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Old 09-16-2019, 08:19 AM
CSMBlack-540i CSMBlack-540i is offline
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Quote:
Originally Posted by Burning2nd View Post
i put 55w HID's with the yellowest bulb i could get... its like 2800k or something..

very bright, very yellow

and the HID ballast dont give you a fog lamp out error..

the leds will unless they are specifically error free, OUR lcm's dont like that

Which HIDs do you have that are error free?
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Old 09-16-2019, 04:37 PM
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Burning2nd Burning2nd is offline
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Idk.. i just bought them.. nothing special

hids dont come error free.. because they have ballast's which the car see's as a regular light bulb..

Its when you get in to led you have to get error free... because the draw is so little
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