OK, had a play around with the range and realistically you have the following: which is based around me, and I'm 6 foot.
Lowest: top of backrest 35", eyeline 35"
Highest: 40", eyeline 40"
Personally I run it with the eyeline at 36" as that puts me in line with the centre of my screen.
Keep in mind that the lowest is semi single seat reclined position; and the highest would be a GT/TC/NASCAR position, far more upright and with the wheel closer.
I've grabbed a few pictures to give you an idea of what it looks like and the options you have to adjust it, as the straps for the lumbar, seat base and back of the legs does also provide a degree of adjustment as well.
The wheel can be set to three positions in terms of distance, however can't be adjusted for height, you do however have a very good range of adjustment for the angle its at. The lack of height adjustment is honestly my only issue with it. The pedal base can also be adjusted for reach quite easily.
I've had people of heights as varied as 5' 2" to 6" 8" use it without issue.
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And what it looks like with an old GTP'er in it.
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