Suzuki VZ1500 Owner's Manual page 81

 WARNING
Downshifting when engine speed is
too high can:
• cause the rear wheel to skid and
lose traction due to increased
engine braking, resulting in an
accident; or
• force the engine to overrev in the
lower gear, resulting in engine
damage.
Reduce speed before downshifting.
 WARNING
Downshifting while the motorcycle is
leaned over in a corner may cause
rear wheel skid and loss of control.
Reduce your speed and downshift
before entering a corner.
5-7