Happy New Year ! I'm getting older but still learning.
I found this posting on Camaros.Net forums, and this is the tire decode format that I am going to go with.
https://www.camaros.net/forums/17-wh...date-code.html
So here is the decode of the tires that I found : CY LD B3 K7 281
CY = McCreary Tire & Rubber Company
LD = Indiana, PA – tire plant
B3 = Goodyear model #3
K7 = Mold system K #7
28 = 28th week
1 = year 1991
Listed below are some DOT Manufacturer Codes (first two characters) that may prove useful to others trying to decode other vintage tires.
M6 THE GOODYEAR TIRE & RUBBER COMPANY LAWTON OKLAHOMA
MB THE GOODYEAR TIRE & RUBBER COMPANY AKRON OHIO
MC THE GOODYEAR TIRE & RUBBER COMPANY DANVILLE VIRGINIA
MD THE GOODYEAR TIRE & RUBBER COMPANY GADSDEN ALABAMA
MJ THE GOODYEAR TIRE & RUBBER COMPANY TOPEKA KANSAS
VE BRIDGESTONE/FIRESTONE NORTH AMERICAN TIRE DES MOINES IOWA
YD BRIDGESTONE/FIRESTONE NORTH AMERICAN TIRE DECATUR IL
YE BRIDGESTONE/FIRESTONE NORTH AMERICAN TIRE DES MOINES IA
YU BRIDGESTONE/FIRESTONE NORTH AMERICAN TIRE DES MOINES IA
AJ UNIROYAL TIRE COMPANY DETROIT MICHIGAN
AK UNIROYAL TIRE COMPANY CHICOPEE FALLS MASSACHUSETTS
AM UNIROYAL TIRE COMPANY LOS ANGELES CALIFORNIA
AJ UNIROYAL TIRE COMPANY DETROIT MICHIGAN
AK UNIROYAL TIRE COMPANY CHICOPEE FALLS MASSACHUSETTS
AM UNIROYAL TIRE COMPANY LOS ANGELES CALIFORNIA
CY MCCREARY TIRE & RUBBER COMPANY INDIANA PENNSYLVANIA