Motorcycle Scooter Tire Guide 2026 Edition MICHELIN 185
Load distribution has a signif icant impact
on the occurrence of vehicle handling dif f iculties
The presence of added or modif ied accessories
Topbox bags streamlining windshield handles seat
non original handlebar ends
The general condition
of the motorcycle
Unevenness or damage of spoked wheels
Bearing wear
Fork Alignment seals oil
Steering column
Swingarm
Shock absorber
Damaged frame engine mountings
Weaving KICKBACK Shimmy Vibration
LEVEL OF WEAR Big ef fect Some ef fect Some ef fect Weak ef fect
INFLATION PRESSURE Big ef fect Some ef fect Some ef fect No ef fect
STRUCTURE : BIAS / RADIAL Big ef fect Some ef fect Some ef fect No ef fect
CENTERING OF TIRE ON RIM Big ef fect Some ef fect Some ef fect Big ef fect
BALANCE OF WHEEL
AND TIRE ASSEMBLY
Weak ef fect No ef fect No ef fect Big ef fect
IV - THE MAIN PROBLEMS
Handling difficulties
HANDLING DIFFICULTIES DEFINED
It is not always easy to determine the causes and origins of various handling problems . Handling problems may come from
Tires ( type of tire , incorrect pressure ) , and / or changes to the vehicle ( accessories , load , etc . ) . Tires are not always the cause .
WHEN THE TIRES ARE PARTLY RESPONSIBLE
FOR HANDLING PROBLEMS
weaving
a shimmy
kickback
vibration
It is a wavering movement , of
variable extent occurring on
straight lines or bends , usually
starting at an average speed of
around 140 kph ( 90 mph ) .
It is a sideways , continuous
oscillation of the fork at low
speed ( < 100 kph / 60 mph )
usually whilst slowing down .
It is a sharp sideways
movement at the front ( fork
moves back and forth ) , it is
intermittent and very fast ,
occurring particularly whilst
accelerating . It is triggered by
an external source such as a
bump or join in the tar .
It appears at the level of the
fork / wheel assembly usually at
speeds of around 90 to 130 kph
( 55 to 80 mph ) .
BUT THE TIRES ARE NOT ALWAYS THE CAUSE
TECHNICAL DATA I THE MAIN PROBLEMS