Recent Topics
Taurus question
by Lubener
6 minutes 29 seconds ago
Lucas Extreme Duty CLP?
by Ws6
23 minutes 25 seconds ago
Pennzoil Ultra 5w20 / 7500mi / '08 Ford Fusion 3.0
by sdude2k2000
Today at 12:59 AM
Hairline Cracks in Radiator
by Merkava_4
Today at 12:05 AM
Super Tech Syn 5/30
by RevRider
Yesterday at 11:31 PM
Installing a dish washer.
by ram_man
Yesterday at 10:37 PM
Strangest Three Wheel Car Ever
by Fsharp
Yesterday at 09:57 PM
Remove Gasoilne and other Blowby Gasses
by landtoy80
Yesterday at 09:48 PM
Trans Am said goodbye to his battery today.
by ls1mike
Yesterday at 09:39 PM
Lil Big Rig - I want one
by montero1
Yesterday at 09:01 PM
[Cut Open] Champ PH2808 - Torn Pleat
by Bud_One
Yesterday at 08:41 PM
2015 silverado dealer oil change
by Realtech214
Yesterday at 08:27 PM
Newest Members
robco, TrogDorInjection, wytenow, maxud, OrchardAuto
56875 Registered Users
Who's Online
27 registered (dlundblad, Char Baby, B320i, an3_bolt, 5 invisible), 511 Guests and 206 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
56875 Members
66 Forums
244480 Topics
3981493 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#3399649 - 06/17/14 09:50 AM Date codes on tires
old1 Offline


Registered: 01/04/11
Posts: 458
Loc: Nebraska USA rural
Just out of curiosity, what year did they start putting date codes on tires? On my old (1980) pickup, which I just buy used tires for, and my 65 mustang, which just gets used for cruise nights and shows, I can't find any numbers that could possibly be date codes. I find it on my new (2014) car, but not on any of the old ones, so just wondering how old the tires probably are?


Edited by old1 (06/17/14 09:52 AM)

Top
#3399651 - 06/17/14 09:53 AM Re: Date codes on tires [Re: old1]
Quattro Pete Offline


Registered: 10/30/02
Posts: 30503
Loc: Great Lakes
It's a bit more tricky with tires manufactured prior to 2000. This TireRack article has some info on this...

http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=11
_________________________
'02 530i (PPE 5W-40)
'15 Q5 3.0T (Edge 5W-40)

Top
#3399653 - 06/17/14 09:58 AM Re: Date codes on tires [Re: old1]
old1 Offline


Registered: 01/04/11
Posts: 458
Loc: Nebraska USA rural
Thanks

Top
#3399668 - 06/17/14 10:27 AM Re: Date codes on tires [Re: old1]
Hokiefyd Offline


Registered: 06/24/04
Posts: 13695
Loc: North Carolina
old1, it's also possible, if the date codes appear to be missing, that they're on the sidewall that's facing in towards the vehicle. Tire manufacturers are required to put the full DOT code (including the date produced) on at least one of the sidewalls, and the full code should be on the sidewall intended to face out. So they'll be on the sidewall with a white wall or white letters, or on the sidewall that's labeled "OUTSIDE" for an asymmetrical tire. But for a symmetrical blackwall tire, with two sidewalls that are the same, the date code may be facing in.
_________________________
Cheers,
Jason

2009 Honda Ridgeline RTL
2005 Acura MDX Touring

Top
#3399718 - 06/17/14 11:44 AM Re: Date codes on tires [Re: old1]
eljefino Offline


Registered: 06/15/03
Posts: 28660
Loc: ME


27th week of 1995. The little triangle means it's from the 1990s. IIRC lacking a triangle makes it the 80s, and 4 digits = 2000+.

From my collection.

If they're trying for looks on your mustang they probably put all the boring stuff on the inside, on purpose.

Top
#3399759 - 06/17/14 12:34 PM Re: Date codes on tires [Re: old1]
CapriRacer Offline


Registered: 02/22/03
Posts: 2884
Loc: Somewhere in the US
And to answer the original question.

The law goes back to the late 1960's. I'm sure there was a transition period, but I can't tell you when the drop dead date was - but by the time I started working in the tire industry (1971), it was fully implemented everywhere.

And, yes, if you don't find the DOT code or only a partial, look on the other side of the tire. Prior to 2008, when it was mandated that a full code had to be on the side intended out and the other had to have a partial, it was only required on one side and usually that was the side intended in.
_________________________
CapriRacer

Visit my web site: www.BarrysTireTech.com

Top
#3399792 - 06/17/14 01:13 PM Re: Date codes on tires [Re: old1]
old1 Offline


Registered: 01/04/11
Posts: 458
Loc: Nebraska USA rural
That is probably why I couldn't find it, I am sure they are prior to 2008, and they are whitewalls, so must be on the inside. Next time I have the car up for service, I will see what it says on the inside. Not that it really matters to me of course, as long as they go around I will run them. I was just curious. Thanks

Top
#3403462 - 06/21/14 11:51 PM Re: Date codes on tires [Re: old1]
sxg6 Offline


Registered: 05/23/04
Posts: 2339
Loc: CT
I actually ran into this problem myself, I had trouble locating the date codes on two sets of tires for my fathers 4runner. On a set of yokohama's from 2009, and a set of bridgestones from 2011, the date codes were molded into the interior sidewall of the tires.

Top