I have no idea how fast it turns but you could figure it out:
Find an online tire calculator to calculate the circumference of the tire.
The final drive gear ratio is probably 31/11. (It's stamped on the FD near where it bolts to the swing arm.
The 1-5 gear ratios are 4.50 / 2.96 / 2.30 / 1.88 / 1.61:1
At 60mph the engine is turning at x,xxx RPM.
Just do this backwards:
I recently did a write-up on an
ABS II K1100RS spline lube. Sometime in the next few days I'll do a K75/K100 version of it since most of it is very similar.