An error occured when trying to show the publication. Please check if JavaScript is enabled or try to update your browser.
IV - THE MAIN PROBLEMS
The 7 main defects
Damage
Impact
crown sidewall
DESCRIPTION
Crown damage with or without puncture and/or tears and
splits. Localized breaking.
CAUSES
External aggression either by running over sharp/blunt
objects or by rubbing against a foreign body.
DEVELOPMENT
Damage to a tyre by running underinf lated, breakage
of plies, product delamination.
CHECKS / ADVICE
•Check conditions of use.
•Check pressure used.
•Replace the product(s) concerned if the damage
is extensive and has reached plies or the carcass.
DESCRIPTION
Damage to sidewalls with or without puncture instead
of perforation and/or tears.
CAUSES
External aggression either by running over sharp/blunt
objects or by rubbing against a foreign body.
DEVELOPMENT
Rubber and/or plies broken on the sidewall, running
underinf lated.
CHECKS / ADVICE
•Check the conditions of use.
•Check pressure used.
•Replace the product(s) concerned if the damage
is extensive and has reached plies or the carcass.
crown sidewall
DESCRIPTION
Impact with plies broken on the crown
Evidence of impact are generally found on the tread
CAUSES
External aggression by running over sharpblunt objects
DEVELOPMENT
Rubber andor plies broken on the sidewall running
underinf lated
CHECKS ADVICE
Check conditions of use
Replace the tyre
Examine the other tyres on the vehicle
DESCRIPTION
Cuts extended to the carcass visible plies with or without
broken cords Pinching impact
Immediate break without pinching
CAUSES
Impact or pinching of the sidewalls after running over
a pothole or mounting a kerb for example
DEVELOPMENT
Rubber andor plies broken on the sidewall running
underinf lated
CHECKS ADVICE
Check conditions of use
Replace the products concerned if the carcasses
are damaged
Useful tip
When making visual checks pay particular attention to the tread area and the sidewalls. Look for unusual, excessive, or uneven
tread wear, foreign objects, bulges or deformation, signs of penetration, cracking of the rubber or any deterioration or damage.
MICHELIN MOTORCYCLE AND SCOOTER 180
Technical data
