Seat height, unladen weight 850 / 870 mm (low seat* 820 / 840 mm, lowered suspension* 790 / 810 mm) *OE
Inner leg curve, unladen weight 1870 / 1910 mm (low seat* 1820/1860 mm, lowered suspension* 1770 / 1810 mm) *OE
Seat height, unladen weight 33.5/34.3 inches (850/870 mm) low seat: 32.3 inches
(820 mm), lowered suspension: 31.1 inches (790 mm)
Inner leg curve, unladen weight (none given)
So, same height, but given the "thinness" comments, it may be a shorter inner leg curve.
FWIW, BMW is certainly starting to pay attention to the seat height comments -- the K16 seat is a lot lower/shorter inner leg curve than the previous K12LT or R12RT.