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Issues and advices

  • 1. Sidewall Puncture
    For passenger cars

    Possible Causes and Influencing Factor:

    - Sharp stones, rocks, glass, nails, bolts, steel bars, etc.
    - Rocks caught between dual tires.
    - Rough driving, Rough terrain.
    - Improper tire specification for application.
    - Improper inflation pressure.

    For trucks and buses

    Possible Causes and Influencing Factor:

    - Sharp stones, rocks, glass, nails, bolts, steel bars, etc.
    - Rocks caught between dual tires.
    - Rough driving, Rough terrain.
    - Improper tire specification for application.
    - Improper inflation pressure.

  • 2. Sidewall Impact Break/Rim Pinch
    For passenger cars

    Possible Causes and Influencing Factor:

    - Improper inflation pressure and/or overloaded conditions.
    - Impact damage by object or rim.
    - Damage may appear sometime after the initial impact.
    - Misapplication

    For trucks and buses

    Possible Causes and Influencing Factor:

    - Improper inflation pressure and/or overloaded conditions.
    - Impact damage by object or rim.
    - Damage may appear sometime after the initial impact.
    - Misapplication

  • 3. Chafing - Bead Base
    For passenger cars

    Possible Causes and Influencing Factor:

    - Wrong size of rims or rim components.
    - Irregular rims. (deformed, rusted, cracked, etc.).
    - Improper inflation pressure and/or overloaded conditions.
    - Sudden or abnormal braking/acceleration/cornering.
    - Tire improperly mounted on rim.

    For trucks and buses

    Possible Causes and Influencing Factor:

    - Wrong size of rims or rim components.
    - Irregular rims. (deformed, rusted, cracked, etc.).
    - Improper inflation pressure and/or overloaded conditions.
    - Sudden or abnormal braking/acceleration/cornering.
    - Tire improperly mounted on rim.

  • 4. Chafing - Flange Area
    For passenger cars

    Possible Causes and Influencing Factor:

    - Wrong size of rims or rim components.
    - Irregular rims. (deformed, rusted, cracked, etc.).
    - Improper inflation pressure and/or overloaded conditions.
    - Sudden or abnormal braking/acceleration/cornering.
    - Tire improperly mounted on rim.
    For trucks and buses

    Possible Causes and Influencing Factor:

    - Wrong size of rims or rim components.
    - Irregular rims. (deformed, rusted, cracked, etc.).
    - Improper inflation pressure and/or overloaded conditions.
    - Sudden or abnormal braking/acceleration/cornering.
    - Tire improperly mounted on rim.
  • 5. Running Flat
    For passenger cars

    Possible Causes and Influencing Factor:

    - Continuing to run after air loss.
    - Acute underinflation pressure.
    - Rim, valve, or valve extention leakage.
    - Source of air loss may not be noticable due to extent of damage.
    - Over deflection due to overload and/or under inflation.
    For trucks and buses

    Possible Causes and Influencing Factor:

    - Continuing to run after air loss.
    - Acute underinflation pressure.
    - Rim, valve, or valve extention leakage.
    - Source of air loss may not be noticable due to extent of damage.
    - Over deflection due to overload and/or under inflation.
  • 6. Cut Break
    For passenger cars

    Possible Causes and Influencing Factor:

    - External cut on the tread.
    - Over inflation pressure and/or over loading.
    - Rough drive at high speed.
    For trucks and buses

    Possible Causes and Influencing Factor:

    - External cut on the tread.
    - Over inflation pressure and/or over loading.
    - Rough drive at high speed.
  • 7. Tread Leaving Belt (TLB)
    For passenger cars

    Possible Causes and Influencing Factor:

    - Accumulative poor inflation maintenance effect.
    - Improper inflation pressure.
    - Excessive speed.
    - Improper repair.
    - Accumulative tire abuse.
    - Progressing from tread cut or puncture.
    - Run flat.
    - Excessive heat.
    - Prior impact damage.
    - Excessive speed.
    - Improper storage.

    For trucks and buses

    Possible Causes and Influencing Factor:

    - Accumulative poor inflation maintenance effect.
    - Improper inflation pressure.
    - Excessive speed.
    - Improper repair.
    - Accumulative tire abuse.
    - Progressing from tread cut or puncture.
    - Run flat.
    - Excessive heat.
    - Prior impact damage.
    - Excessive speed.
    - Improper storage.

  • 8. 8. Tread Puncture
    For passenger cars

    Possible Causes and Influencing Factor:

    - Sharp stones, rocks, glass, nails, bolts, steel bars, etc.
    - Rough driving, Rough terrain.
    - Improper inflation pressure.
    - Improper tire specification for application.
    - Slipping/ skidding/ spinning on rough roads.
    For trucks and buses

    Possible Causes and Influencing Factor:

    - Sharp stones, rocks, glass, nails, bolts, steel bars, etc.
    - Rough driving, Rough terrain.
    - Improper inflation pressure.
    - Improper tire specification for application.
    - Slipping/ skidding/ spinning on rough roads.

  • 9. Saparation From Inner Liner
    For passenger cars

    Possible Causes and Influencing Factor:

    - Accumulative poor inflation maintenance effect.
    - Over deflection due to overload and/or under inflation.
    - Run flat.
    - Improper repair.
    - May be associated with a manufacturing issue.

    - Lack of tire maintainance

    For trucks and buses

    Possible Causes and Influencing Factor:

    - Accumulative poor inflation maintenance effect.
    - Over deflection due to overload and/or under inflation.
    - Run flat.
    - Improper repair.
    - May be associated with a manufacturing issue.

    - Lack of tire maintainance

  • 10. Spot Wear - Not Break Flat Spot
    For passenger cars

    Possible Causes and Influencing Factor:

    - Faulty suspension or faulty rotating parts such as axle bearings.
    - Faulty braking system.
    - Weight imbalance of wheels.
    - Excessive run-out of tire and rim assembly.
    - Over deflection due to overload and/or under inflation.
    - Chemical contamination.
    - Localized underlying seperation.

    - Lack of tire maintainance

    For trucks and buses

    Possible Causes and Influencing Factor:

    - Faulty suspension or faulty rotating parts such as axle bearings.
    - Faulty braking system.
    - Weight imbalance of wheels.
    - Excessive run-out of tire and rim assembly.
    - Over deflection due to overload and/or under inflation.
    - Chemical contamination.
    - Localized underlying seperation.

    - Lack of tire maintainance

  • 11. Irregular Wear
    For passenger cars

    Possible Causes and Influencing Factor:

    - Improper inflation pressure.
    - Improper wheel alignment and mounting of wheel.
    - Improper rotation practices.

    - Lack of tire maintainance

    For trucks and buses

    Possible Causes and Influencing Factor:

    - Improper inflation pressure.
    - Improper wheel alignment and mounting of wheel.
    - Improper rotation practices.

    - Lack of tire maintainance

  • 12. Sidewall Ozone Cracks Black Rubber
    For passenger cars

    Possible Causes and Influencing Factor:

    - Exposure to ozone from sunlight, generators, electrical motors, airborne contaminants, etc.
    - Effect of oxidation (ozone exposure) maximized by overloading and/or underinflation.
    - Exposure to vehicle exhaust.
    - Typical of tires used in prolonged service.
    - Long term parking when tire is under inflated and deflected.
    - Exposure to damaging chemicals and frequent use of tire cleaners.

    - Lack of tire maintainance

    For trucks and buses

    Possible Causes and Influencing Factor:

    - Exposure to ozone from sunlight, generators, electrical motors, airborne contaminants, etc.
    - Effect of oxidation (ozone exposure) maximized by overloading and/or underinflation.
    - Exposure to vehicle exhaust.
    - Typical of tires used in prolonged service.
    - Long term parking when tire is under inflated and deflected.
    - Exposure to damaging chemicals and frequent use of tire cleaners.

    - Lack of tire maintainance