Article 2012 - Radial Ply Tire Tread Wear Pattern

TSB #128 - December 5, 1969
(1970 Thunderbird Equipped with Radial Ply Tires)

Some customers of the 1970 Thunderbird cars equipped with Goodrich radial ply tires may be concerned about an apparently rapid but even wear of the outer and inner tread shoulders. Should this condition be questioned, the customer must be informed that is wear pattern is characteristic of this radial ply tire and does not decrease expected tread life of the tire. Tire air pressure should not be increased greater than that specified on the tire pressure decal. However, if abnormal wear conditions, such as cupping, feathering, etc., are noted, the normal check and adjust procedure of the Diagnostic Manual should be followed to correct.