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1967 Cadillac Tires


Tom Laferriere

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31 minutes ago, Tom Laferriere said:

Maybe 300 miles, maybe 500.  It's unknown exact miles as the car really was never driven until now.  I am unclear on this DOT code for age.  

 

Maybe check the other side of the tire for DOT code?

Generally the DOT code has one set of values on one side, 

and a more complete set, including the 4-digit date code on the other,

occasionally intentionally obscured.

 

General information:

If the last 4 characters are numeric (digits),

then the first pair indicate the week of the year, and the last pair indicate the year number,

but if only three (3) digits, then prior to year 2000.

 

Examples:

0711 would be the 7th week of 2011

071 could be the 7th week of 1991, or 1981, or 1971

 

Extraneous info - just my opinion:

Tire age "may" be more of a consideration for radial tires than for bias ply.

Generally, some industry recommendations suggest the useful or questionable life of a radial may be ten (10) years from manufacture date, and others suggest seven (7), or even five (5). Based on personal experience and tread and/or belt separation at speed, I don't keep mine beyond five (5) years even if the tread looks unused!

Bias -ply tires "MAY" be less affected by aging to a slightly lesser degree.

Of course none of this applies if you only drive your show car from the trailer to the show field and back-

but if you actually drive, tour, eg - USE your car, caution cannot be overly stressed,

 

Again, just one guy's opinion ...

Edited by Marty Roth (see edit history)
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