The series production started slowly in April 1989
Sales began at BMW dealerships on 29th May 1989
Production milestones:
Total of 6921 k1 have been produced between 1988 and 1993
1988: 12 = 0,17% - not sold
1989: 3700 = 53,46%
1990: 2032 = 29,36%
1991: 745 = 10,76%
1992: 296 = 4,48%
1993: 107 = 2,05%
click on the pic or use: https://www.visitspandau.de/en/look-/industrial-culture/bmw-motorcycle-plant/
the series production figures/ year
Frame numbers + date of manufacture