C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Mar 16, 2013 | 06:26 PM
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i need to know the correct date code on a 1984 good year eagle p255/50vr16. the numbers i have on these tires are dot mkc1 hjo 217 as far as i can tell in 87 they made this size p245/60vr16. i'm confused . i have 4 of the original tires and wheels off a 84 corvette the part numbers on the wheels are corect the tires look like they haven't been changed out ever. now there is an other number just right of the 217 (010r) the r and L must mean right side and left side. i haven't recived my book from the ncrs as of yet. thanks jonneyone
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Old Mar 16, 2013 | 08:40 PM
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Date code on tires is on the "inside" sidewall and NOT the outside on early tires. Prior to the year 1999/2000 tire date codes would be three digit codes, after the year 2000 they became four digit. It would be "branded" into the tire.

****Appears these could be date coded on the outer sidewall

The first 2 digits would be the week and the last the year, 124 could be interpreted as either 12th week 84 or 12th week 94 BUT I believe a 94 date code would be followed by a triangle. If your code is 217 I'd say it's a tire constructed the 21st week 1987. If followed by a triangle 1997

Snapshots?

The date codes have nothing to do with the tire size ONLY the production of the tire "regardless" of the size. A P255/50VR16 built today would display maybe 1013

Last edited by WVZR-1; Mar 17, 2013 at 04:25 AM.
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Old Mar 16, 2013 | 10:59 PM
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i looked on the inside of the tires i found this tpc spec 1044 does this mean anything. i know in 87 they put on a p245-60vr16 according to the corvette specs for that year. 1987. all four tires had that number on them on the inside of the tire, thanks jonneyone
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Old Mar 17, 2013 | 03:48 AM
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It appears these could be date coded maybe on the outside. This is what a date code of a tire constructed in the 80's would appear as from Goodyear:

This is 2nd week 1988 and constructed at Union City TN



dot mkc1 hjo 217
I'd say is constructed Union City TN and 21st week 1987

Plant codes:

http://incolor.inetnebr.com/uswa286/...e%20Codes.html

Here's what appears to be a complete listing of tire company "plant codes" - worldwide:

http://www.tirelitigation.com/html/tirecodelist.html

Last edited by WVZR-1; Mar 17, 2013 at 04:04 AM.
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