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older tire help

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Does anyone here ever used irc tires and know how their date coded? Only numbers on tire are cj24.......m1b........022. They are irc motocross z mark 3.

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Found this:

Before the year 2000, only the last 3 digits told you about the date. For example, if the last 3 digits were 508, then that means that the tire was made during the 50th week of year 8 of that decade. Was it 1998, 1988? There may be ways to determine which decade, but why waste time on that?

So in your case (022), the tire was made the second week of the second year in a particular decade. Seems the latest it could be is 1992. After 2000, they used 4 digit date codes.

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