I have been searching out tire DOT codes on the internet. I have found one person on the internet who states that first two letters "CY" are the plant code for McCreary Tire Plant in Indiana, PA and that is the plant where the Goodyear reproduction tires are manufactured.
Last three digits 281 most likely indicate the 28th week of 1991.
Still like to hear if anyone else can second this opinion or has other information/experience with these type of tires.
Thanks !
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