Example: Reverse lights on a F32 are ~ 16 watts. There really is a marketing strategy regarding LED watt rating, as I have spoken to several LED suppliers, many of them rate their bulbs' wattage based on that of an incandescent bulb with a equal wattage. I just have a couple of things to correct. The stock F30 both the low-beam and high-beam OEM bulbs are rated at 55w, so anything at that wattage and below are totally fine as far as your car's electrical system goes. That why you typically see HUGE heat sinks in the form of fins, folds of metallic cloth, or attachments on the back of LED low-beam bulbs and/or LED headlight housings in order to dissipate it. One downside to LEDs is that they produce massive amounts of heat over their halogen counter parts. It has the same current draw / power consumption as the halogens but produces over twice the output. A 55w LED bulb produces over 3000 lumens. A 55w halogen bulb gives around 1200-1400 lumens. Every light bulb's (halogen/LED/HID/.) wattage rating is an objective measure of how much current it draws due to its load. LEDs typically have around 2x-3x the lumens/watt rating than halogens.Īlso, there is no "marketing" as far as wattage goes. ) has a range of lumens/watt that that type of bulb produces. A 55w halogen bulb typically produces around 1000-1500 lumens. I don't know of any 55w halogen bulb that produces 3000 lumens. A LED bulb would be marketed as 55 Watt because it gives the same amount of light output as the incandescent but whilst using substantially less power. For example, a 55 Watt halogen bulb gives 3000 lumens. LED manufacturers sometimes identify their products with the equivalent wattage of their incandescent alternatives. If you are using LEDs then you should be alright.
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