Join Date: Jun 2003
Location: kernersville, NC, USA
gas thread again
My 98 K1200RS will not run on regular -it pings. runs fine on mid grade and that is what i use.
As a reference my R1100RT runs great on regular  but my sons R1100S requires midrange . it depends on the state of tune and the condition of the engine.
The requirements can also change with the age and usage of the engine.
Also the octaine retings are different slightly in different parts of the country and in europe.
1998 K1200RS [TAXI],
2007 K1200 R-SPORT