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[Z06] Tire Date Code?

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Old May 4, 2020 | 03:54 PM
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Default Tire Date Code?

So I read a post on CF last week that Discount Tire has factory sizes available for C5 Z F1s, something that has been hard to come by for some time. I ordered a set last week and received notification today that they've come in. I'll apologize for being a skeptic - why were these out of production for so long? - but now that they're here I'd like to know how to read the date code. Curious how "new" they are! I'll report back and thanks for the insight.
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Old May 4, 2020 | 04:03 PM
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Find the DOT number on the side of the tire. At the end of it will be a four digit number, and that's your date code. The first two digits are the week, the last two digits are the year. For example, I have a set of tires with code 4915, so they were manufactured in the 49th week of 2015.

Last edited by Dbl_D718; May 4, 2020 at 04:04 PM.
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Old May 4, 2020 | 04:52 PM
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Thanks for the quick reply. I checked the dates on my current tires on the Z, GSD3s, one has the date code missing? I show two tires for comparison.


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Old May 4, 2020 | 06:57 PM
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Its on the other side of the tire. Date codes are on one side or the other
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Old May 4, 2020 | 08:07 PM
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It will be interesting to see since I don't think there is a law regulating how recent date codes have to be to be sold as new tires.
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Old May 4, 2020 | 08:35 PM
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the one tire is the 36th week of 2007

Last edited by StingrayRebel; May 4, 2020 at 08:37 PM.
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Old May 5, 2020 | 07:45 AM
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Almost looks like the date code was ground off on that tire that does not have a date code.
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Old May 5, 2020 | 11:37 AM
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Originally Posted by Discount Tire
@2TONE82

Thank you for your support. It looks like you have located the DOT's, however one being from 2007 and the other indeed looks like it has been removed is of concern. We would like to look into this further, PM headed your way.

@DEFCON5

Although its rather unregulated, we will not sell a new tire that is over 4 years old, with the intentions that at 6 years old the petroleum oils inside the rudder has deteriorated enough it would be recommend to be replaced regardless of wear. Which is why 2007 is a bit concerning.
Wow, you guys are on it at Discount Tire. Hold up though...those pictures are from my CURRENT tires, a set of GY GSD3s that I put on the Z16 in 2007. My question on CF was to understand how to know the manufacturing date on the NEW GYF1s (which have been unavailable for years) that I'm having installed tomorrow. I'll keep everyone posted. Again, good customer service there Discount Tire!
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Old May 6, 2020 | 11:04 AM
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All good with new shoes for Z06/Z16 #165. The tires were made in 2019, fronts mid August and rears late November. Discount Tire took great care of me too. Now to put some miles on these new shoes!

Baby is getting new shoes today. Goodyear finally made some factory size F1 Supercar tires again. It's been several years since they were available.



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Old May 6, 2020 | 12:40 PM
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What made you choose Goodyear over Michelin?
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Old May 6, 2020 | 12:48 PM
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Originally Posted by Gary In NM
What made you choose Goodyear over Michelin?
The GY F1s were the OEM tire option and they fit my driving needs as this car sees about 1,500 miles a year. They've not been available for some time or at least every time I was looking. I put the GSD3s on a long time ago (late 2007) because that was pretty much my only option other than some Firestones that had a weird rim saver lip over on them. Really liked the GSD3s especially in the rain (gasp, I know!) back when this was my DD for a little over a year. She's a cruiser now that sees some spirited driving every so often and the F1's fit the bill.
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Old May 6, 2020 | 12:58 PM
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Originally Posted by 2TONE82
The GY F1s were the OEM tire option and they fit my driving needs as this car sees about 1,500 miles a year. They've not been available for some time or at least every time I was looking. I put the GSD3s on a long time ago (late 2007) because that was pretty much my only option other than some Firestones that had a weird rim saver lip over on them. Really liked the GSD3s especially in the rain (gasp, I know!) back when this was my DD for a little over a year. She's a cruiser now that sees some spirited driving every so often and the F1's fit the bill.
Thanks. I knew that they were OEM. I need new tires yesterday. Let us know how they ride/drive when you get some miles on them.
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Old May 7, 2020 | 10:32 PM
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Outstanding that you were able to find a set of tires for your Z. They certainly have been hard to find in recent years.
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Old May 18, 2020 | 09:34 PM
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has any one read the tread on tires for vets and how they have changed over the last 10 or so years in making them ?
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