Motorcycle Scooter Tire Guide 2026 Edition MICHELIN 189

sidewall

DESCRIPTION

Localized or widespread

cracks in the rubber -

radial , oblique or on the

circumference - of varying

sizes that may reach the plies .

These breaks may be on all

sidewall areas of the tire .

CAUSES

Visible damage in the f lexed

area

CHECKS ADVICE

Types of surface of use

Roads paths accesses

Speed load pressure

Inspect the other tires on the

vehicle

Adapt pressure to use

Replace the product s

concerned if the splits are

deep or have reached the

plies or carcass

crown

DESCRIPTION

Splits in the rubber on the

crown , edge or base of tread ,

with

or without radial or

circumference tears .

CAUSES

Conditions of use .

DEVELOPMENT

Risk of contamination with

damage to crown or sidewall

CHECKS ADVICE

Check conditions of use

Replace the product s

concerned if the damage

is extensive and has reached

plies or the carcass

crown

DESCRIPTION

Cracks in the tread . Cracks

at the base or edge of the

shoulder tread pattern .

CAUSES

• Product aging .

• Exposure to ozone or UV ,

use of an aggressive cleaning

product , risk of developing

into splits .

DEVELOPMENT

Splits .

CHECKS / ADVICE

• Check the conditions of

use , parking / storage and

servicing of the vehicle .

• Replace the product ( s )

concerned if the splits are

deep and reach the plies or

carcass .

sidewall

DESCRIPTION

Cracks in sidewall rubber .

CAUSES

• Excessive overheating due to

the carcass working too hard

( used when underinf lated ) .

• Exposure to ozone ,

prolonged exposure to light .

• Wax , varnish , washing

products , etc .

DEVELOPMENT

Check conditions of use .

CHECKS / ADVICE

• Check conditions of use .

• Type of riding , speed load ,

pressure .

• Check the tire storage or

servicing conditions .

• Check pressure used .

cracks

Splits / Crown

TECHNICAL DATA I THE MAIN PROBLEMS