E46Fanatics - View Single Post - Tail light lenses melting...
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Old 10-30-2012, 08:47 AM   #11
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Join Date: Aug 2012
Location: Gulfport, MS
Posts: 511
My Ride: 2002 325i
Originally Posted by sledge View Post
Definitely cheap lenses... but the plastic is hot enough to MELT. This isn't Styrofoam, its hard plastic! Light bulb surface temps supposedly only heat up to about 260 degrees F from my understanding...
Out in the open air or with good air flow, that might be true. However, the bulbs are in a confined and more or less sealed space. As long as the bulbs are on, xx watts of power are being supplied to it. Pretty much all of that is converted to heat, and the surface of the bulb will just keep getting hotter and hotter until something fails. The only cooling is through the surfaces of the light enclosure (sides and lens).
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