Another Tire Date Code Question

[Bryan M.]

Hello,
Can somebody decipher this date code? I think the 1 means 71. The code reads CDNDLJD1. Or is it even original?

[John H.]

Re: Another Tire Date Code Question

Hello,
Can somebody decipher this date code? I think the 1 means 71. The code reads CDNDLJD1. Or is it even original?

Looks like a pre-DOT 8-character code string.

[Grant W.]

Re: Another Tire Date Code Question

Hello,
Can somebody decipher this date code? I think the 1 means 71. The code reads CDNDLJD1. Or is it even original?

Yes you have an original tire. Probably a spare.
CD-March 12th week of 71
N- Manufacture
D- Location plant
DJ- F70x15
D1- Raised white letter

Hope this helps.
Grant
PS. I love corvettes too!!!!

[Bryan M.]

Re: Another Tire Date Code Question

Looks like a pre-DOT 8-character code string.

John,
The tire also has the DOT letters. Here's a few more pics.

[Bryan M.]

Re: Another Tire Date Code Question

Yes you have an original tire. Probably a spare.
CD-March 12th week of 71
N- Manufacture
D- Location plant
DJ- F70x15
D1- Raised white letter

Hope this helps.
Grant
PS. I love corvettes too!!!!

Thanks Grant for the interpretation. It seems to be an unmolested tire.

[Dale C.]

Re: Another Tire Date Code Question

Grant,
Without posting pictures, cause I'm tech defficient, what would a Goodyear redline F70X15 be with the following: 223990-2 then the enclosed KT01536 and verbage of MEETS RMA-1 & SAE J918a & V-1. They are showing some small cracking or seperation so I am not driving on them. Could they be correct for a 68 car?
Thanks
Dale (3147)

[Tom R.]

Re: Another Tire Date Code Question

Yes you have an original tire. Probably a spare.
CD-March 12th week of 71
N- Manufacture
D- Location plant
DJ- F70x15
D1- Raised white letter

Grant

How did you get March 12th week of 71 from "CD?"

[Terry M.]

Re: Another Tire Date Code Question

I suspect it should be "March, 12th week of 71" So I suppose it might be the last week of March. 12th week of the year 1971.

[Grant W.]

Re: Another Tire Date Code Question

Grant

How did you get March 12th week of 71 from "CD?"

Hi Tom
Sorry for the short explanation. Terry is correct.
It is the 12th week of 1971, I don;t have a 71 calender but it is the 3rd week of March in 1971.
Thanks, Grant

[Grant W.]

Re: Another Tire Date Code Question

Grant,
Without posting pictures, cause I'm tech defficient, what would a Goodyear redline F70X15 be with the following: 223990-2 then the enclosed KT01536 and verbage of MEETS RMA-1 & SAE J918a & V-1. They are showing some small cracking or seperation so I am not driving on them. Could they be correct for a 68 car?
Thanks
Dale (3147)

Hi Dale
Not much info is given on 68 tires but here goes.
K 1967
T January
0 Goodyear
1 Plant location Akron Ohio
536 ??? I don't know as I have other tires ending 512 or 438 Anybody else want to give it a shot??
Thanks, Grant

[Terry M.]

Re: Another Tire Date Code Question

The TIM&JG used to have a calender for the years of the manual -- but it got left out, or someone decided to leave it out, of the latest edition. I don't know why.

[Bryan M.]

Re: Another Tire Date Code Question

The TIM&JG used to have a calender for the years of the manual -- but it got left out, or someone decided to leave it out, of the latest edition. I don't know why.

Terry,
I don't see it in my 3rd edition. Would this tire considered to be too early for an April 27 72 build date? If so, what would be the points hit?

[Terry M.]

Re: Another Tire Date Code Question

Bryan,

The calender IS in my third edition -- page 116. Perhaps I got a special edition, but it has no autographs in it.

Yes, it will be too early for your 1972 since all those tires, and 2/3 of 1971 production, should have the Federally mandated longer code with the last three numbers indicating week and year. No one will know what that early code is, but the latest it could be is first quarter of 1971 -- which coincidently it is.

The rule of thumb for dates (except window glass and other items as specified in the TIM&JG) is six months prior to the car build. There is no way to fit the first quarter of 1971 into six months before your end of April 1972 car build, regardless of how much you push and squeeze.

The Judging Reference Manual should have some guidelines for out of date tires, but failing that the rule of thumb (my, my we are all thumbs tonight) is 20% of the available originality points is assigned to each of the originality variables.

Repeat after me class:

Configuration
Completeness
Installation
Date
Finish

Five variables at 20% each = 100%

[Dale C.]

Re: Another Tire Date Code Question

Grant
Thanks for the info. I guess a Jan. 67 tire would go O.K. on a March 68 car. We get ones today way over a year old on both old amd new cars.
Dale.

[Grant W.]

Re: Another Tire Date Code Question

Terry,
I don't see it in my 3rd edition. Would this tire considered to be too early for an April 27 72 build date? If so, what would be the points hit?

HI Bryan
In a perfect world is having the original spare in your tub. Well it doesn't happen that often.
I have been researching for many years now as to the correct dated spare for my car and talking to people with original cars and with original spares.
The furthest date I've seen is approximately 2 months and sometimes 3 months from the assembly date of the car. The most common is the spare is 1 month from the assembly date of the car. I don't know what the other 4 tires are on the car but it must be also very close to the spare. Incidentally the date of the spare rim is usually predated about a week before the date of the tire.
I had found a 69 mint tire that was used very little. The date on the rim was a 69 but the black wall tire was dated late 71. So I guess someone put on NOS tire from the 70's on the 69 rim.

You should find a 72 spare with the months dated Jan(late) feb or March.
Hope this helps.
Grant