Redline Tires 7.75x15, nylon cord

Years 1963–79 Models 2

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Also described as 7.75x15 Redline Tires

Also documented for GMC

Documented applications

Corvette (C1 / C2)

1967 Confirmed

$46.65; 4,230 built; replaced T01 goldwalls

Impala / Full-Size

1963–70s (varies) Single-source

This page aggregates every documented appearance of QB1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.