Help Me Figure Out This Tire Wear

[abscate]

All tires have a DOT date code stamp into the sidewall. The last 4 numbers. Week and year.

I thought this was true, but I have a pair of dry-rotted Doral tires that look ancient. Can't find a date code anywhere, still hold air though. Other than brand, tire size and PSI, all else I could find was a 'Made in Indonesia' stamp.

There has to be a date code if they are post 1970 , I think, but old tires pre 2000 have a slightly different codes

Unvetted Internet snip

The first two letters or numbers identify the manufacturer of the tires.
Prior to the year 2000, the last 3 digits of a DOT number represented the week (2 digits) and the year (1 digit) of production. So if the last three digits are 408, the tire was produced in the 40th week of the 8th year of the decade. There was no universal identifier that confirmed which decade in which the tire was manufactured (however, tires produced in the 1990s may have a small triangle following the Tire Identification Number).
Tires produced after January 1, 2000, have a 4-digit date code at the end of the DOT number. The first 2 digits represent the week of production and the last 2 digits represent the last 2 digits of the year of production. So, 5107 indicates the tire was produced in the 51st week of the year 2007.

[WhatAmIDoing]

All tires have a DOT date code stamp into the sidewall. The last 4 numbers. Week and year.

I thought this was true, but I have a pair of dry-rotted Doral tires that look ancient. Can't find a date code anywhere, still hold air though. Other than brand, tire size and PSI, all else I could find was a 'Made in Indonesia' stamp.

There has to be a date code if they are post 1970 , I think, but old tires pre 2000 have a slightly different codes

Unvetted Internet snip

The first two letters or numbers identify the manufacturer of the tires.
Prior to the year 2000, the last 3 digits of a DOT number represented the week (2 digits) and the year (1 digit) of production. So if the last three digits are 408, the tire was produced in the 40th week of the 8th year of the decade. There was no universal identifier that confirmed which decade in which the tire was manufactured (however, tires produced in the 1990s may have a small triangle following the Tire Identification Number).
Tires produced after January 1, 2000, have a 4-digit date code at the end of the DOT number. The first 2 digits represent the week of production and the last 2 digits represent the last 2 digits of the year of production. So, 5107 indicates the tire was produced in the 51st week of the year 2007.

I'll check again, but I swear there is no DOT number, date code, etc. Those tires really sketched me out. Glad I replaced them first thing when I bought the car.