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Old 06-27-2025, 12:18 PM   #29
Dabjbr

 
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No problem. Happy to help!

Glad you were able to confirm tire age. I know there are many opinions on what is/not acceptable so i'll leave that for you to decide.

I can't tell you how firm the sidewalls should feel. Makes me think of the hand trick to determine meat tenderness. lol

Good luck whichever way you go!
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Old 06-27-2025, 12:23 PM   #30
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Quote:
Originally Posted by Dabjbr View Post
No problem. Happy to help!

Glad you were able to confirm tire age. I know there are many opinions on what is/not acceptable so i'll leave that for you to decide.

I can't tell you how firm the sidewalls should feel. Makes me think of the hand trick to determine meat tenderness. lol

Good luck whichever way you go!
Thank you very much for you advice.
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Old 06-27-2025, 12:42 PM   #31
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Spongy sidewall...compared to what? Every brand is different. And the SC3 has dimples for tread depth at the outer tread blocks.
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Old 06-27-2025, 01:17 PM   #32
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Quote:
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Spongy sidewall...compared to what? Every brand is different. And the SC3 has dimples for tread depth at the outer tread blocks.
Check post 23. Not sure what you mean by dimples.
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Kooks 1-7/8" Long Tube Headers l Kooks Hi-Flow Cats l Kooks X-Pipe l Borla S-Type NPP Exhaust
GPI SS2 Cam l GPI Ported Heads l Katech Oil Pump l Katech Valley Cover l GPI Hardened Pushrods
BTR Valve Springs l Johnson 2110R Lifters l Ported LT2 Intake Manifold l Ported 95mm LT5 TB
Rotofab CAI l Mishimoto Catch Can l DSX Flex Fuel Sensor l 93/E85 Tune
BMR Rear Cradle Lockout Kit l Katech VVT Delete kit l CHE Trunion Upgrade l LT1 HPFP
LME/GPI Timing Chain Guide l Katech Timing Chain l AFM Delete
Halo Tunnel Brace l MRR 1LE Wheels l Goodyear SC3 1LE Tire Package l GM Lowering Kit
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Old 06-28-2025, 08:31 AM   #33
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Quote:
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Check post 23. Not sure what you mean by dimples.
Hard to see in your pic, but they are in the circles.

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Old 06-28-2025, 10:05 AM   #34
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Quote:
Originally Posted by cdb95z28 View Post
Hard to see in your pic, but they are in the circles.

Attachment 1165520

Attachment 1165521
Yep, the dimples are definitely there. I have been thinking about this purchase a lot. While I am convinced that the tires are new, they are just too old. D/C is from 2020. There are also dark blemishes along on the inner rim that I can't live. (shown in the first pic). I am dropping them off back at Walmart this afternoon and will buy a set with more recent D/C's.
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Kooks 1-7/8" Long Tube Headers l Kooks Hi-Flow Cats l Kooks X-Pipe l Borla S-Type NPP Exhaust
GPI SS2 Cam l GPI Ported Heads l Katech Oil Pump l Katech Valley Cover l GPI Hardened Pushrods
BTR Valve Springs l Johnson 2110R Lifters l Ported LT2 Intake Manifold l Ported 95mm LT5 TB
Rotofab CAI l Mishimoto Catch Can l DSX Flex Fuel Sensor l 93/E85 Tune
BMR Rear Cradle Lockout Kit l Katech VVT Delete kit l CHE Trunion Upgrade l LT1 HPFP
LME/GPI Timing Chain Guide l Katech Timing Chain l AFM Delete
Halo Tunnel Brace l MRR 1LE Wheels l Goodyear SC3 1LE Tire Package l GM Lowering Kit
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Old 06-28-2025, 03:46 PM   #35
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Your pic is of the inside shoulder...look at the code on the outer shoulder. My buddy looked at the same (wrong) #.
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Old 06-28-2025, 03:50 PM   #36
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Quote:
Originally Posted by cdb95z28 View Post
Your pic is of the inside shoulder...look at the code on the outer shoulder. My buddy looked at the same (wrong) #.
The code on the sidewall is 0320
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Kooks 1-7/8" Long Tube Headers l Kooks Hi-Flow Cats l Kooks X-Pipe l Borla S-Type NPP Exhaust
GPI SS2 Cam l GPI Ported Heads l Katech Oil Pump l Katech Valley Cover l GPI Hardened Pushrods
BTR Valve Springs l Johnson 2110R Lifters l Ported LT2 Intake Manifold l Ported 95mm LT5 TB
Rotofab CAI l Mishimoto Catch Can l DSX Flex Fuel Sensor l 93/E85 Tune
BMR Rear Cradle Lockout Kit l Katech VVT Delete kit l CHE Trunion Upgrade l LT1 HPFP
LME/GPI Timing Chain Guide l Katech Timing Chain l AFM Delete
Halo Tunnel Brace l MRR 1LE Wheels l Goodyear SC3 1LE Tire Package l GM Lowering Kit
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Old 06-28-2025, 03:57 PM   #37
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As visible from the above pic, 0320 is the code stamped on the inner sidewall. These tires are assymetrical, there is an inside and outside.
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Old 06-28-2025, 04:05 PM   #38
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From the NHTSA website:

U.S. DOT Tire Identification Number

"This number begins with the letters "DOT" and indicates that the tire meets all Federal standards. The next two or three numbers or letters are the plant code where the tire was manufactured. The last four numbers represent the week and year the tire was built. For example, the numbers 3107 means the 31st week of 2007. The other numbers are marketing codes used at the manufacturer’s discretion. This information is for contacting consumers if a tire defect requires a recall."

Need a pic of the outer shoulder.



My buddy's inner shoulder, note the 4 digits are alone, not following the other #s which are preceded by the DOT designation.

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His outer shoulder:

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Views: 280
Size:  71.2 KB
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Old 06-28-2025, 04:31 PM   #39
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Quote:
Originally Posted by cdb95z28 View Post
From the NHTSA website:

U.S. DOT Tire Identification Number

"This number begins with the letters "DOT" and indicates that the tire meets all Federal standards. The next two or three numbers or letters are the plant code where the tire was manufactured. The last four numbers represent the week and year the tire was built. For example, the numbers 3107 means the 31st week of 2007. The other numbers are marketing codes used at the manufacturer’s discretion. This information is for contacting consumers if a tire defect requires a recall."

Need a pic of the outer shoulder.



My buddy's inner shoulder, note the 4 digits are alone, not following the other #s which are preceded by the DOT designation.

Attachment 1165535

His outer shoulder:

Attachment 1165536
Great information, I did not realize that there was another set of numbers. Thanks for that
I'll check when I get home a little later and let you guys know.
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Kooks 1-7/8" Long Tube Headers l Kooks Hi-Flow Cats l Kooks X-Pipe l Borla S-Type NPP Exhaust
GPI SS2 Cam l GPI Ported Heads l Katech Oil Pump l Katech Valley Cover l GPI Hardened Pushrods
BTR Valve Springs l Johnson 2110R Lifters l Ported LT2 Intake Manifold l Ported 95mm LT5 TB
Rotofab CAI l Mishimoto Catch Can l DSX Flex Fuel Sensor l 93/E85 Tune
BMR Rear Cradle Lockout Kit l Katech VVT Delete kit l CHE Trunion Upgrade l LT1 HPFP
LME/GPI Timing Chain Guide l Katech Timing Chain l AFM Delete
Halo Tunnel Brace l MRR 1LE Wheels l Goodyear SC3 1LE Tire Package l GM Lowering Kit
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Old 06-28-2025, 07:36 PM   #40
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I have about 24 tires or so in my inventory. All but 8 are Goodyears, mostly the SC3 or SC3R, and four are an oddball German made SuperSport R for Porsches. All the 3 and 3Rs have the seperate # on the inner shoulder that is nowhere the manufacture date (in parentheses), 0305 (0323), 0317 (1223), 0310 (1922), 0420 (1421), 2017 (3420). Some, but not all of them do have the manufacture date on both the outer and inner shoulder, in the correct spot as per the NHTSA info. I also had read that the manufacturer is not required to put the date on both sidewalls.
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Old 06-28-2025, 08:13 PM   #41
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Thank you for the helpful feedback! Here are better pics of the inner and outer sidewalls. The first pic is the inner side wall. The D/C can't be August of 2025, so in this case would you say it's March of 2020 or unknown?
Attached Images
  
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Kooks 1-7/8" Long Tube Headers l Kooks Hi-Flow Cats l Kooks X-Pipe l Borla S-Type NPP Exhaust
GPI SS2 Cam l GPI Ported Heads l Katech Oil Pump l Katech Valley Cover l GPI Hardened Pushrods
BTR Valve Springs l Johnson 2110R Lifters l Ported LT2 Intake Manifold l Ported 95mm LT5 TB
Rotofab CAI l Mishimoto Catch Can l DSX Flex Fuel Sensor l 93/E85 Tune
BMR Rear Cradle Lockout Kit l Katech VVT Delete kit l CHE Trunion Upgrade l LT1 HPFP
LME/GPI Timing Chain Guide l Katech Timing Chain l AFM Delete
Halo Tunnel Brace l MRR 1LE Wheels l Goodyear SC3 1LE Tire Package l GM Lowering Kit
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Old 06-28-2025, 11:06 PM   #42
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It was produced the eighth week of 2025. (0825)

So late February production. Don’t get much newer than that!
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