Sidewall - Bleeding* CBU(Cord Broken Up)      *Inflation pressure will leak gradually

Image:Bleeding* CBU(Cord Broken Up)

Condition of damage

Carcass cords are broken up circumferentially at shoulder or sidewall in a line or a saw pattern


Excessive heat generation and fatigue caused by gradual leakage of air due to:

  • 1. Unmatched valve core or aged core rubber
  • 2. Fine materials such as mud or dust in the valve
  • 3. Pin hole (small puncture) or tire and/or tube
  • 4. Rust or any fine materials on the bead seat of rim
  • 5. Unsatisfactory repair of puncture

Stop to use the damaged tire

  • 1. Use tires under the recommended air pressure and load, and check the air pressure periodically
  • 2. Use a correct, new valve core
  • 3. Use a valve cap to avoid entry of fine materials
  • 4. Use new tubes for new tires
  • 5. Remove rust or fine materials from the bead seat of rims when tires are mounted
  • 6. Repair punctured tires and/or tubes correctly