Fungabriel, while I agree with you that having a safely positioned headrest is important for whiplash prevention, I disagree with your view that
ANY modifications, even the slightest, to Camry's headrest is inevitably going to result in significant neck injury. Without a doubt Camry's headrest is significantly anteriorly positioned, even when compared to other Toyota vehicles, to the extent that it is causing a lot of discomfort in more than few people as posted in earlier discussions, but it's headrest is also different vs. other Toyotas in one other way, which I will describe more below.
Being in the medical field as a prescriber, one must
weigh both a medication's
benefits vs. adverse effects - What good is the benefit derived from a medication when a patient is unable to tolerate its adverse effects??? No physician with any common sense will continue to prescribe a medication that causes intolerable side effects, even if the medication, say, will significantly reduce the chances of having a heart attack in the future.
Similarly, headrests ought to be positioned such that
(1) must be positioned to provide reasonable amount of comfort and minimize discomfort, and
(2) be safe, which nearly all car headrests are nowadays.
But for the Camry, I think there was also a THIRD reason that Toyota went very hard to fulfill that led to Camry's headrest/seat design, which I will also mention below, that has led to many people finding it too uncomfortable.
First see the photos below and judge for yourself the clear difference in Camry vs non-Camry Toyotas' headrest/seat.
** The biggest difference in Camry vs non-Camrys in my view is the in the
CONTOUR LINE along the headrest and the upper seat
- Camry's headrest is SIGNIFICANTLY PROTRUDING FORWARD vs the upper seat, creating a jagged contour line
- in the non-Camry Toyota's, the headrest is slightly anteriorly tilted BUT the headrest & upper seat contour line is much more uniform AND it just appears much more natural (it just looks much more comfortable vs. Camry, don't you think?)
'
22 Camry - notice the jagged contour line in headrest & upper seat, and much more anteriorly tilted
21 ES (F-Sport) - smooth & natural contour line in headrest & upper seat, less anteriorly tilted
'22 Corolla Hatchback - smooth & natural contour line in headrest & upper seat, less anteriorly tilted
'22 RX - smooth + natural contour line of headrest & upper seat, somewhat similarly anteriorly tilted like Camry
BUT not protruding forward as much
'22 Prius - smooth + natural contour line in headrest & upper seat, less anteriorly tilted
'21 Rav4 - smooth + natural contour line in headrest & upper seat, less anteriorly tilted
With the non-Camry Toyotas having a more natural contour line of headrest/seat, this results in an
even & more equal distribution of support in-between the
upper thoracic vertebrae and the head, while in the Camry, the contour line of headrest & seat appears jagged and not continuous and thus very unnatural, with the headrest jutting far too forward vs upper seat, and as a result the
head is far too anteriorly positioned (too much support) relative to the upper thoracic spine, and this together with a
more acute angle created by the stronger anterior tilt is what I believe makes it so uncomfortable for
some owners.
Why do some owners find Camry's headrest/seat configuration very comfortable while others find it intolerable? Simple - every person's spines are different. Just as some people tolerate medicine A and not medicine B while the reverse may be true for others, the same applies to Camry's headrest. I am merely pointing out that there is a clear difference in the way Toyota designed Camry's headrest/seat vs. many of their other vehicles, and as such,
I don't believe that this was intentionally done to make Camry's occupants "more safe" and less prone to whiplash - if safety was their sole intention,
why don't ALL their models share the same design?
My speculation as to this drastic difference in Camry vs other Toyota models' headrest/seat design difference is that
Camry's designers wanted to make Camry appear more 'sportier' and 'sleeker' in appearance, pure and simple. "No more boring cars!", as Akio Toyoda said, and Camry's designers have been working the hardest IMO to make the Camry look less boring in order to appeal to more younger buyers, as evident in the dramatic overhaul in the Camry's overall design - more so than any other Toyota models. I mean, when did a Camry ever have a black roof on white exterior and red seats??? Which does look great IMHO which is what I have =)
But going back to the topic of the headrest, just look at how much
smoother and
more natural appearing (or less acutely angled) the headrest/seat contour line is in the ES, Corolla and RX's vs. Camry's jagged and
forward protruding headrest which is
also significantly more anteriorly tilted (
more acutely angled), resulting in a
non-uniform headrest/seat contour line.
Now, going back to your statement mentioning that in a theoretical accident <"
modifications to the head restraint [caused] you to sustain significant injury to your neck">
- your statement is merely
speculative prediction, but you seem to state it as a proven fact when there is
lack of any evidence that Camry's design is much safer vs. their other models. How can you say that modifying the Camry's headrest to make the headrest/seat contour line more natural-appearing & similar to non-Camry Toyotas will inevitably result in greater whiplash injury in an accident?
If what you are saying is a fact, then supposedly those millions of non-Camry Toyota owners who are driving Corollas, ES, RX, Prius, Rav4s are now at a significantly greater risk of whiplash injury since their headrests are not protruding forward nor are they as anteriorly tilted as the Camrys - do you truly believe that this is what Toyota's engineers also concluded in all their wisdom and years of studies and testing? I highly doubt it. Like I said earlier, I strongly believe the headrest/seat design was likely a result of Camry's designers (not engineers) going overboard in trying to make it look more sportier & sleeker in order to appeal more to younger buyers.
And with regards to you mentioning about insurance company investigating these modifications, I also doubt that providing only a minor posterior tilt of both front seat headrests only to make them appear more natural and more in line with non-Camry Toyota's is going to raise any huge red flags.
I am not here to bash Camrys, far from it - I love my car and it has been one of the best cars I've driven in years.
BUT the longer I drove the vehicle, the more I became aware of how uncomfortable my neck felt afterwards, which was not so evident on a short test drive, as I've never had such problems before in previous cars I've driven, and I only later realized that its headrest protruding forward vs upper seat PLUS the significant anterior tilt was just not working for me, which is why I decided to make a slight change to the tilt. Now it is so much more comfortable for me and my neck doesn't scream of discomfort afterwards, and I had merely decided to post my earlier response since some other people had similar experiences.
I also certainly do not recommend moving the headrest far too backwards, as that will very likely lead to greater neck problems in an accident - that's not what I was saying. Just a small enough posterior tilt to make it more tolerable and natural, closer to many non-Camry Toyotas - that seems to be the best approach in my view.