Originally posted by deilenberger
If you watch EBay autos - and do a search under motorcycle parts for "BMW K" - you'll see things like a low-seat kit appearing once in a while. This kit is made for the K75 series, and includes the lowered seat, a revised computer box (no document section) and the rubber mount for the front on the tank.
This should gain your wife about 2-3" of leg length (well - that's the effect). You can then put 80 series tires on the K75, which will lower it about 3/4" over the standard 90 series (Bridgestone BT45's come in the correct size and as an 80 series). Your final step would be a short rear shock (Works Performance and Progressive both offer shorter rear shocks for the K75) and either moving the fork tubes up in the triple-tree, or shortening the spacer inside the forks.
If you do ALL of these - you're likely to end up with a bike with about a 27" seat height (or less).
Problems you'll have:
1. The short shock and lower tires put the bike closer to the ground (your goal!) - but the sidestand will now stand the bike much more upright, and the centerstand will be unusable without riding the rear wheel up on a 2" or so ramp.
2. The comfort of the low-seat is typical BMW. If you're thinking of taking long trips - watch on Ebay or the IBMWR marketplace for a short seat that has been recovered by Russell.
HTH, I've BTDT with the exception of the low seat - and my inseam is 27" on a tall day.
One other trick - look for boots with thick soles - mine are about 3/4" thick - which makes a big difference.