search | help | calendar | games | forum home » Hello Spec Miata Community » SpecMiata.com » Spec Miata Competition Tires » RA1 date code deciphering Email this page to someone! | Subscribe To Topic   Author Topic: RA1 date code deciphering Giles Medlicott Member Region: NorthWest Car #: 747 Year : 1990 Posts: 10 Status: Offline posted         I found a set of used RA1's with lots of tread remaining (4/32), but need help figuring out the production date. The codes are: 2L1239 & 2L1459 The most recent thread on RA1's refers to a week/year code, but 12th week, 39 year?? Are they possibly very old? MAK Member Region: SFR Year : 1994 Posts: 125 Status: Offline posted         Determining the Age of a Tire -------------------- -Mike Joe Specht Moderator Region: BMR Car #: 236 Year : 83 Posts: 257 Status: Offline posted            Look on the other side of the tire. The one side has the first portion of the DOT that identifies the plant where it was manufactured and also what tire it is. The other side has the full DOT. Joe Giles Medlicott Member Region: NorthWest Car #: 747 Year : 1990 Posts: 10 Status: Offline posted         Thanks guys. From the link, it looks like they were both manufactured in 1999. That makes them past their usable life I'm guessing...unless 1999 was a really good year for tires! CP Member Region: NER Car #: 7 Year : 1999 Posts: 636 Status: Offline posted            10 year old track tires are junk even if they've never been used before. -------------------- -Cy Supported by LTD Racing & Speed Shack - New England's Premier Auto Accessory Store Rt1 AutoMile - Norwood, MA http://www.speedshackonline.com gbeaty Junior Member Posts: 2 Status: Offline posted         I just bought a set of 225/45/15 RA-1s from racetire.com. Their build date is the 30th week of 2006 Are many of the newly purchased RA-1s this old? Joe Specht Moderator Region: BMR Car #: 236 Year : 83 Posts: 257 Status: Offline posted            All the RA1's that I have are from 2009. Joe TreadZone Sean Allen Veteran Member Region: SFR Car #: 54! Year : 90' Posts: 1907 Status: Offline posted            Return em, ask for newer ones. Or ask for money off. NItto just practically gave away something like 100 sets of their NTo1 because they were an 05 build date. Printer-friendly view of this topic | Subscribe To Topic Hop To: Select a Forum:   Category: SpecMiata.com -------------------- Spec Miata Spec Miata Garage Spec Miata Rules & Competition Spec Miata Competition Tires Spec Miata Safety Spec Miata Setup Guide Spec Miata Data Acquisition NASA PTE/E3 Spec Miata to FProd SMulators Spec Miata Frequently Asked Questions Showroom Spec Miata Pro Miata Spec Miata Enduro Spec Miata Virtual Swap Meet SMTV Back Fire Announcements   Category: Spec Miata Archives -------------------- Spec Miata 2001-2009 Garage 2002-2009   Category: Sports Car Club of America -------------------- SCCA North-East SCCA South-East SCCA Great Lakes SCCA Central SCCA Mid-West SCCA South-West SCCA Rocky Mountain SCCA North Pacific SCCA San Francisco Region SCCA South Pacific   Category: National Auto Sport Association -------------------- NASA Discussion NASA Northeast NASA Southeast NASA Central NASA Midwest NASA Northwest NASA Southwest   Category: Mid Western Council -------------------- MWC Discussion

© Jim Daniels, MazdaRacers.com and East Street Auto All rights reserved.