BMW K 1100 LT/RS Repair Manual page 290

Reduced brake effect when applied hard?
no
Check brake fluid.
Has brake fluid aged?
Only mederate brake effect?
no
Check brake pads.
Are brake pads worn/damaged?
no
Check brake system.
Is there air in brake system?
Brakes squeak.
no
Check brake pads.
Are brake pads dirty?
no
Check brake discs.
Is lateral runout of brake discs too large?
no
Check wheels.
Is axial runout too large?
34.32
yes
Renew brake fluid.
yes
Renew brake pads.
yes
Bleed brake system.
yes
renew brake pads.
yes
Replace brake discs.
yes
Renew wheels.