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Help Me Figure Out This Tire Wear

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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abscate
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abscate

Re: Help Me Figure Out This Tire Wear

Post by abscate » Fri Mar 06, 2020 4:10 am

WhatAmIDoing wrote: ↑
Thu Mar 05, 2020 10:53 pm
crlande wrote: ↑
Thu Mar 05, 2020 2:47 pm
All tires have a DOT date code stamp into the sidewall. The last 4 numbers. Week and year.
I thought this was true, but I have a pair of dry-rotted Doral tires that look ancient. Can't find a date code anywhere, still hold air though. Other than brand, tire size and PSI, all else I could find was a 'Made in Indonesia' stamp.
There has to be a date code if they are post 1970 , I think, but old tires pre 2000 have a slightly different codes

Unvetted Internet snip
The first two letters or numbers identify the manufacturer of the tires.
Prior to the year 2000, the last 3 digits of a DOT number represented the week (2 digits) and the year (1 digit) of production. So if the last three digits are 408, the tire was produced in the 40th week of the 8th year of the decade. There was no universal identifier that confirmed which decade in which the tire was manufactured (however, tires produced in the 1990s may have a small triangle following the Tire Identification Number).
Tires produced after January 1, 2000, have a 4-digit date code at the end of the DOT number. The first 2 digits represent the week of production and the last 2 digits represent the last 2 digits of the year of production. So, 5107 indicates the tire was produced in the 51st week of the year 2007.
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WhatAmIDoing

Re: Help Me Figure Out This Tire Wear

Post by WhatAmIDoing » Fri Mar 06, 2020 7:15 am

abscate wrote: ↑
Fri Mar 06, 2020 4:10 am
WhatAmIDoing wrote: ↑
Thu Mar 05, 2020 10:53 pm
crlande wrote: ↑
Thu Mar 05, 2020 2:47 pm
All tires have a DOT date code stamp into the sidewall. The last 4 numbers. Week and year.
I thought this was true, but I have a pair of dry-rotted Doral tires that look ancient. Can't find a date code anywhere, still hold air though. Other than brand, tire size and PSI, all else I could find was a 'Made in Indonesia' stamp.
There has to be a date code if they are post 1970 , I think, but old tires pre 2000 have a slightly different codes

Unvetted Internet snip
The first two letters or numbers identify the manufacturer of the tires.
Prior to the year 2000, the last 3 digits of a DOT number represented the week (2 digits) and the year (1 digit) of production. So if the last three digits are 408, the tire was produced in the 40th week of the 8th year of the decade. There was no universal identifier that confirmed which decade in which the tire was manufactured (however, tires produced in the 1990s may have a small triangle following the Tire Identification Number).
Tires produced after January 1, 2000, have a 4-digit date code at the end of the DOT number. The first 2 digits represent the week of production and the last 2 digits represent the last 2 digits of the year of production. So, 5107 indicates the tire was produced in the 51st week of the year 2007.
I'll check again, but I swear there is no DOT number, date code, etc. Those tires really sketched me out. Glad I replaced them first thing when I bought the car.
'98 S70 T5M - 276,000+mi - forever a project
'99 S70 "AWD" - 220,000+mi - wrecked :cry:
Knows enough to be dangerous :wink:

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