Sidewall Blister

Damage Description: Sidewall Blister
NISSAN CODE: 7N





DEFINITION:
A lifting of the rubber layer (i.e., portions of sidewall stock or white sidewall rubber) from the tire's sidewall structure, caused by lack of adhesion between the rubber and structure. This lifting will often "pocket" air (see Figure 1).

MAJOR INSPECTION POINT(S):

1. Check for proper air pressure.
2. Localized separation, with or without an air pocket, between the sidewall rubber and tire casing.
3. There should be no evidence of chafing, shock, or abrasion on the tire sidewall.
4. There should be no tread penetrations or perforations in the tread area directly adjacent to the blister.