190 MICHELIN Motorcycle Scooter Tire Guide 2026 Edition

IV - THE MAIN PROBLEMS

The 7 main defects

( competition range )

crown

DESCRIPTION

Uneven wear Type of wear on crown

sawtooth wear in the rolling direction

max min wear evidence of wear

on the shoulder rail type wear

DEVELOPMENT

If wear is too pronounced risk of damage

to the crown plies

CHECKS ADVICE

Go over the history of the tire mileage

dates changed load front rear f itment etc

Check conditions of use

Check if the size is suitable and the one

recommended by the manufacturer

Check inf lation pressure

Check the mechanical condition of

suspension steering and wheel bearing

elements

Correct all mechanical anomalies

on the vehicle

Do not exceed the recommended load

DESCRIPTION

Formation of deep wrinkles ,

visible on the internal or

external shoulder of the tire .

CAUSES

The mixture is not warmed

up , the tire is outside its

window

of use .

The mixture temperature is

too low ; grip is therefore not

generated .

CHECKS / ADVICE

1 . Increase the pressure

( 1 . 8 bar maximum for the

rear ; 2 . 5 bar for the front ) .

2 . Choose a softer compound

and adapt pressure to type

of use .

3 . Adjust the bike settings

to make the rear tire work

correctly .

Inner liner

THE TIRE MUST NOT SHOW

ANY SIGNS OF MARBLING

BEFORE REPAIR .

DESCRIPTION

The marble is a pleating of

the inner liner . In the marbled

areas , the rubber is blackened

on a width which can have

dif ferent sizes .

CAUSES

Puncture , pressure loss ,

under pressure riding ,

excessive load evolutions .

DEVELOPMENT

Run - f lat riding ,

tire dislocation .

CHECKS / ADVICE

Damage can not be seen

from the outside of the tire ,

in the case of puncture , the

tire must be demounted to be

checked internally . A tire with

marbling evident is no longer

f it for continued use and

should be scrapped .

Type of wear

Graining

Tire damage / Wear

marble

TECHNICAL DATA I THE MAIN PROBLEMS