Michelin Tire date codes
Thread Starter
Racer
Joined: Sep 2014
Posts: 487
Likes: 113
From: Troy TX
Michelin Tire date codes
I was looking at my date codes to see how old my tires were. I have one on the RR dated 4911 which I understand is the 49th week of 2011 the RF the code is 5211, which would be the last week of 2011. But on the LR code is 003X and the LF is 005X. What does that mean? Did they change codes? These tires are Michelin Sport A/S Plus. Any help would be appreciated.
Last edited by doublenut9; Jul 10, 2017 at 11:17 PM.
Safety Car
Joined: Mar 2003
Posts: 4,524
Likes: 372
From: Philadelphia PA
Sometimes the date codes are on the inside of your tire. They only need to be stamped on one side. Those codes are not DOT date code compliant.
https://www.tirerack.com/tires/tiret....jsp?techid=11
https://www.tirerack.com/tires/tiret....jsp?techid=11
Drifting
Joined: Feb 2003
Posts: 1,761
Likes: 235
From: North Carolina
Sometimes the date codes are on the inside of your tire. They only need to be stamped on one side. Those codes are not DOT date code compliant.
https://www.tirerack.com/tires/tiret....jsp?techid=11
https://www.tirerack.com/tires/tiret....jsp?techid=11
My Pilot Sports are date stamped on only one side. They appear on the outside like yours (right front and rear) The dates are on the inner side on the left side of the car.
Pro
Joined: Jun 2010
Posts: 620
Likes: 18
From: Travelers Rest, SC
I was looking at my date codes to see how old my tires were. I have one on the RR dated 4911 which I understand is the 49th week of 2011 the RF the code is 5211, which would be the last week of 2011. But on the LR code is 003X and the LF is 005X. What does that mean? Did they change codes? These tires are Michelin Sport A/S Plus. Any help would be appreciated.
Thread Starter
Racer
Joined: Sep 2014
Posts: 487
Likes: 113
From: Troy TX
Well, thank you everyone for "enlightening" me. I did not realize that the date code was only stamped on one side. Duh!
They were on the inside and matched the other side so I guess that is good. My tires are basically 5 years old with less than 15000 miles on them. I guess this fall when they run some tire sales I will get new tires. I am not planning any long trips, so I think I should be OK.
They were on the inside and matched the other side so I guess that is good. My tires are basically 5 years old with less than 15000 miles on them. I guess this fall when they run some tire sales I will get new tires. I am not planning any long trips, so I think I should be OK.
Race Director
Joined: May 2003
Posts: 14,136
Likes: 2,983
From: Iowa
St. Jude Donor '03 thru '26
Well, thank you everyone for "enlightening" me. I did not realize that the date code was only stamped on one side. Duh!
They were on the inside and matched the other side so I guess that is good. My tires are basically 5 years old with less than 15000 miles on them. I guess this fall when they run some tire sales I will get new tires. I am not planning any long trips, so I think I should be OK.
They were on the inside and matched the other side so I guess that is good. My tires are basically 5 years old with less than 15000 miles on them. I guess this fall when they run some tire sales I will get new tires. I am not planning any long trips, so I think I should be OK.
tires have a useful life in service of between six to ten years. And while part of that time is spent as the tire travels from the manufacturing plant to the manufacturer's distribution center, to the retailer and to you, the remainder is the time it spends on your vehicle.
If I was in your shoes, I'd keep them awhile longer. You only got 15K on them so as long as the tread is okay (and they should be), keep them a few more years. Replacing them now is just a waste of your $.
It's those who still have the original Goodyear run-flats on their C5 who should worry, and they are out there
Safety Car
Joined: Jun 2017
Posts: 3,901
Likes: 1,980
From: Chartres, with a cathedral of XII Century in the middle of the wheat fields FRANCE, la Belle et ses Iles
The built code have to be outside. 0111 is 1st week of 2011. But if the date code is important, the storage conditions are no less so. Unfavorable in damp and too hot places. It takes a temperate temperature, a dry place and avoid adding unnecessary weights on the stored tires. You will find the exact informations on the site of Bib, Bib for Bibendum (pseudonym de Michelin). You just have to translate it automatically via your internet browser :http://www.michelin.fr/pneus/decouvr...stockage-pneus
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