Bicycle tire dating
For tires built after the year 2000, the date code features four digits, and most Tire Identification Numbers are now 12 digits instead of 10.The first two digits of the date code are the week of production and the last two are the year of production.If you buy them in 2018, but the car is in the shop until 2021, you're that many years closer to the tire's expiration date.Whether you choose bias ply or radial tires for your collector vehicle, tire age is an important detail that should not be ignored.The tire industry has some loose guidelines on tire age that call for tire replacement after 6 to 10 years of service.On a daily driver, you'll likely wear out the tread before the 6-10 year window, but on a collector vehicle, the tire could expire well before the tread is gone.The bottom line is if you’re restoring a car that will be driven, it needs tires that are less than 10 years old.At Coker Tire, we've made great effort to eliminate the excuse of "they don't make that tire anymore" by manufacturing original style bias ply tires, using new materials.
Then, when it's time to drive, order your tires, so that you can get the most use out of them.Based on the alpha-numeric sizing nomenclature, it would be our best guess that the tire was manufactured in 1976, as the now standard P-metric sizing (ex. You could also expect this tire to be missing the standardized safety warnings on the sidewall and any type of tread wear indicators, as those features were mandated later than 1976.That’s just one example but you can see how certain styles or sizes can be quickly identified by decade.Usually, if you buy a set of tires for a collector vehicle, you will have a pretty good idea when that 10 years has passed.What if you buy a complete car, or buy a set of tires at a swap meet?
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Even if a car is stored inside and the tires pass a visual inspection (no cracks, dry-rot or other visible deterioration) we typically suggest replacement after 10 years if you plan on driving it.