New to K Bikes?


Here's some basic information to get you started. More maintenance and modification information can be found at this link: BMW K75, K100, K1, K1100 Maintenance & Modifications

Scroll down for documents related to particular models.

At the end of that there's a list of recommended initial modifications.

Links to K bike discussion forums are at the end of the page.


Basic Terminology:

Bimmer vs. Beemer: Not that it really matters but If you're new to BMW motorsports then "Bimmers" refers to BMW cars and "Beemers" refers to BMW motorcycles.

Classic K Bikes: The term "Classic K bikes" refers to K100s, K75s, K1s and K1100s which all have the same basic design based on the original K bike design, the 1983 K100. In the mid 90s the K1200 models were a major redesign in terms of the frame, suspension, bodywork etc...


NOTE: The distribution of the following BMW shop manuals is OK with BMW and does not constitute a copyright violation.


K100, K100RS, K100RT, K100LT

K100 US Rider Manual (PDF)

Operating Tips for a K75 or K100(2V) (PDF)

K Bike General Maintenance (PDF)

K75 & K100 BMW Shop Manual (PDF)

K100RT, K100LT: Radio Owner Manual (PDF)

K75, K75C, K75S, K75RT

K75 US Rider Manual (PDF)

Operating Tips for a K75 or K100(2V) (PDF)

K Bike General Maintenance (PDF)

K75 & K100 BMW Shop Manual (PDF)

K75RT: Radio Owner Manual (PDF)

K1, K100RS4V

K1, K100RS4V Rider Manual - English (PDF)

Operating Tips for a K100RS4V/K1/K1100 (PDF)

K Bike General Maintenance (PDF)

K1 & K100RS4V BMW Shop Manual (PDF)

K1100LT, K1100RS

K1100 US Rider Manual (PDF)

Operating Tips for a K100RS4V/K1/K1100 (PDF)

K Bike General Maintenance (PDF)

K1100 BMW Shop Manual (PDF)

K1100LT: Radio Owner Manual (PDF)


Recommended Initial Modifications

If you're a DIY type of person who can't leave well enough alone then you're probably wondering what the first things you should  modify are. Here's what matters to me.


I like to be seen when I ride in order to minimize the chances of being hit by another vehicle that didn't see me.  I also like the headlight to put out a decent amount of light for riding at night. Click on the items below for more information.

1) Headlight Relays

2) Front Fork LED Aux Lighting

3) Rear Lighting

     a) Rear LED Brake Lighting - Eagle Eye LEDs (my latest & greatest)

     b) Add Brake LEDs To Sides Of Tail Light Lens

     c) Strobing LED Brake Light


4) Firm Up The Handlebars

5) Upgrade Instrument Cluster Lighting To LEDs

6) Heated Grips

7) Real Cruise Control

The last one is a relatively major DIY project but very useful if you plan to ride a lot of miles.


8) Metal Valve Stems

If your bike doesn't have them already then it's a good idea to replace the original rubber valve stems with metal valve stems the next time you have the tires changed.  (In the US I use BikeMaster 151402 valve stems - about $5 each.)

9) Radial Tires

Many K bike models came from the factory with bias ply tires. I strongly advise you to switch over to radial tires for greatly improved handling.

For the 2.50x18 front 3 spoke wheel 110/80-18 tires work well.

For the 3.00x17 rear 3 spoke wheel 150/70-17 tires work well.

2019 Update: There used to be no radial tires that would fit the early "Y-spoke" wheels but Continental now offers their Road Attack 3 radials in the 110/80-18 front and 130/80-17 rear that will work on the Y-spoke wheels.

"Y-Spoke" Wheel

"3-Spoke" Wheel


Discussion Forums for Technical & Other Issues

K100 Forum - Despite the name this forum is open to and welcomes all classic K bike owners.

K11OG Forum - (K1100 Owners Group) Also welcoming to all classic K bike owners.