VISUAL GUIDE FOR INSPECTION AND CLASSIFICATION OF TIRES
2-50. INSIDE TIRE/INNER LINER CONDITIONS (Con't).
b. Open Splice, Inner Liner. The condition as
shown at the right should not be confused with other inner
liner cracks and as previously described. It is a split in the
inner liner, and is localized at where the inner liner
material is joined during the manufacturing process. This
condition may be manufacturer related or due to loss of
adhesion at the splice as a result of excessive flexing from
running underinflated. If ply cords are exposed the tire
should be CRC H and scrapped. If ply cords aren't evident
it may or may not be repaired during the retread and should
be CRC F to give to the retreader for repair.
c. Bubbles, Blisters or Discoloration Inner Liner.
Bubbles or blisters with discoloration are an indication that the tire has been run to long after loss of
inflation pressure and the tire should be scrapped, CRC H. If there are just bubbles and blisters without
discoloration it's an indication that there has been an adhesion loss of the inner liner to the casing. This
may be a result of running the tires underinflated over time or a manufacturing defect. If the blisters are
small and few, the tire may be repaired and CRC F. If the blisters are many or have developed into
bubbles as shown in the example below the tire should be CRC H.