Goodyear Wide Tread GT E70-15 question

[MosportGreen66]

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Quoting from a recent post on the NCRS Tech Board:

"After 1968, tires were required to have DOT source code info molded into the sidewall. For the first several years, the code/sequence was manufacturer-proprietary, but starting in 1971, the sequence was standardized into a 10-digit code with the last three digits representing the month/year of manufacture. When the century rolled over, the sequence was extended to eleven digits, with the last four indicating month/year".

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I have 2 NON-DOT original spares for my 1966 Vettes (Coupe and Convertible). The original Firestone Deluxe Champion Super Belted I have for the 1970 Camaro has a DOT Stamping. So it fits the trend.