Many have noted the GX550 width of 83.22" does not make sense as that would mean it is wider than all other models. When you consider this is intended for offroad, again, the width did not make any sense. After some digging I discovered what I believe is a mistake in the Toyota press releases, in the US press release it states the width is 83.22" and in the World press release it states the width is 1,980mm (which is 77.9"). They are the same vehicle so therefore one spec has to be incorrect.
I made the below drawing to calculate the actual dimensions by backing into the true width by using the published Tread/Track width from the press release plus the 265/70R18 tire width for the Overtrail model. I then estimated the flare extension in order to back into the correct overall width dimension. Since the mirrors sit inboard of the fender flares, they are not part of the equation.
You can see from my drawing below I believe the:
CORRECT width dimension is
77.9" width from the
World press release and the,
INCORRECT width dimension is
83.22" width from the
US press release.
Fellow engineers and data diggers, please double check my figures and post any other calculations you have.