It shouldn't have to be demonstrated (light optics being understandably sensitive), but I'll provide more evidence in a moment, for now a more in depth explanation now that I'm in a place where I can more conveniently type.
All headlamp designs, but especially with those using reflectors (i.e. non-projector style, or any Bonneville headlamp produced) are designed from one core component: the position of the filament. From there, the reflectors at the rear of the headlamp are precisely (please note precisely, headlight optic design is a very precise art) designed to reflect the light in a certain way out towards the road. If that filament is moved, EVEN SLIGHTLY, it throws off the entire design and the entire beam pattern is thrown off from the way it was designed, and yes in my opinion that is a negative.
I'm sorry, but I can't say that a 9005 swap is a good upgrade. Yes, it's noticeably brighter. Yes, some like it. But on that note the same thing is said by those who own HID kits on both counts, and yet no one worth their salt would say that an HID kit is in any way an acceptable lighting upgrade, and I'm sure I don't have to prove that to you. Know why HID kits cause excessive glare? The short answer is that the housings were not designed for that bulb, same as the 9005. The long answer is that the arc (light source) in the HID kit bulb is in a different position than the filament in a 9006 bulb causing, you guessed it, a bad beam pattern and glare. Just like the filament in a 9005 bulb is not in the same position as a 9006 bulb. If we say that a 9005 swap is okay, then at the very least we are hypocritical in saying that an HID kit isn't, since the reason the HID kit is not a good upgrade is the exact same reason that the 9005 swap isn't.
If it floats your boat and you like it, do it. But it's not something I'd care to condone if we are going to talk about acceptable, safe lighting upgrades. That will always be done in either one of two ways: using the stock optics to the best of their abilities (meaning using something that will work correctly with their design) OR changing out the optics for something better (projector retrofit).
If that's not enough, then here's a few more of the demonstrations you're looking for.
Stick with 9006 or 9012 HIR. Headlight designers are smarter than us.
http://honda-tech.com/showthread.php?t=2463761
Bad result, including a before and after photo test.
LeSabre in Buffalo wrote:There's one thing to say about these: WOW! More range and intensity and much less glare than a 9005 swap. The pictures I have do not do these justice.
The lack of glare is what surprised me the most. There is no extra glare like the 9005 bulb gives off when it's in the low-beam housing. There is more light in the places you want to have light. If you looked at the car head-on, you'd swear the headlights were stock based on the lack of glare. I think these will be nicer in inclement weather than HID or 9005 bulbs since the light is aimed at the road, not going wherever it pleases.
I'll post up some better pictures once I find myself on a dark road with my camera handy.
In summary, the Philips HIR2 bulb is much nicer than any 9005 swap, especially to other drivers, and (very likely) in inclement weather.
viewtopic.php?f=14&t=17228
From our very own forum, regarding HIR over 9005 swap. Note the lack of glare. That's because the HIR2 bulb matches the 9006 filament position whereas the 9005 does not. Please also note the vast improvement in where the light is cast and the general vision improvement. This is due almost solely to the position of the filament. 9005 bulbs put out 1700 lumens and HIR2 bulbs like Dave used put out 1850 or so, a scant difference that is not detectable to the human eye. The difference is all in the proper use of the optics.
I did notice that the headlights were a bit too bright and I got a few high beam checks from oncoming traffic, even though they were aimed right.
Aimed right and still getting flashed? Glare. From thread below.
http://crxcommunity.com/viewtopic.php?t=11504
Bad result, glare. Before and after shot too showing the sloppy altered beam pattern and added glare. This thread actually is mostly pro-9005 but the photo results don't agree.
Yeah—the 9005/9006 swap works very well on certain very specific inefficient early BMW projector-type low beams. Because of the optical construction of that type of lamp, the blacktop on the end of the bulb is not needed to prevent upward stray light and glare (the cutoff shield in the lamp serves that function). Lamps like the fogs on your Toyota are fundamentally different, they are reflector-type lamps. The optical mess that results from putting a non-blacktop bulb in place of a blacktop bulb is considerably smaller if there's a full-cap bulb shield in the lamp, but even most of the reflector-type fog lamps that have bulb shields built in need that blacktop for control of glare and stray light.
This is from Daniel Stern himself. This man knows EVERYTHING about lighting, and he says it's a bad idea to put 9005 bulbs in any 9006 reflector headlight. From:
http://www.tundrasolutions.com/forums/e ... -opinions/
From the 'other forum' regarding the 9005 swap:
actually i did this mod, and the Brighter Headlighs, give weird cutoffs now.......
(1993 Bonneville)
I won't link because of the standing with the other forum, but will on request.
http://www.cadillacforums.com/forums/ca ... 10679.html
Altered beam pattern, in projectors no less (which are less sensitive than reflectors to filament position).
Here's some pics in addition to those above. I'll note which side is the 9005.
Left. Note the horribly narrowed beam pattern and central hotspot.
Left. Glare.
I could keep going but I hope this is enough. Yes, it's brighter. Yes, you and others like it. That I don't argue with, and if it provides satisfaction, great. But if our interest is to provide the best information, saying anything short of a 9005 swap being inadvisable is irresponsible. Again with all due respect, I can't condone saying "I think the best we can state here is that the swap can make a noticeable difference, with most saying it is an improvement, and to check your headlight aim after the swap." because it fails to address the fact that the beam pattern will be altered away from the original factory design which SHOULD be considered the best possible outcome using stock optics. To take it a step further, the statement (and general viewpoint) you provided can be found, quite literally, word for word on many lesser forums regarding the use and installation of HID kits.
I hope I haven't come across as rude or abrasive, that wasn't my intent. I always welcome any concerns or criticisms in any of my posts and greatly enjoy a good friendly debate now and again.
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