Replacement Headlight Bulbs

 

A summary of an article in the January 2006 Consumer Reports

 

Tested 5 premium bulbs:

     APC Plasma Ultra White

     GE Nighthawk

     Phillips Crystal Vision

     SylvaniaSilverStar

     Wagner Tru-Vue

Bulbs priced $26-40 per pair, 2 to 3 times normal replacement bulbs.

3 test vehicles used (Toyota, Chrysler, Honda)

Of 15 tests for distance in detecting a dark object using a human subject in the car, only one bulb in one car improved low-beam sight distance, the other 14 were the same or worse. And the one that did performed worse than OE in another car.

Of 15 tests for increased brightness using meters, “no one bulb scored consistently better than OE”.

Glare to oncoming drivers was no worse than OE (these were all advertised as "Street Legal per DOT".

Some drivers subjectively preferred the “whiter” light the legal premium bulbs gave.

For more details of the tests, see the Consumer Reports web site.

These results may not reflect more recently designed bulbs.


I do use Silver Stars and don’t notice a significant difference from stock.

If you want a significant improvement, Litronics kits are available from your dealer or from Porsche Dismantelers.