Can anyone interpret this DOT tire code?

[Ahoragi]

I bought a 99 cherokee a few years back. It has dry rotted tires on it and I am curious how old they are. The DOT code is DOT U9HH FMA. There is not date or any numbers after that.

Any ideas?

Yeah I know they are OOOLLLLDDDD 😄 but was curious how old.

 

[Whitenuckler]

I bought a 99 cherokee a few years back. It has dry rotted tires on it and I am curious how old they are. The DOT code is DOT U9HH FMA. There is not date or any numbers after that.

Any ideas?

Yeah I know they are OOOLLLLDDDD 😄 but was curious how old.

Should be 4 numbers
In the US, the tire date code is found on the sidewall, as part of the Tire Identification Number (TIN), often referred to as the DOT code. This code indicates when the tire was manufactured. For tires produced after the year 2000, the last four digits of the TIN represent the date. The first two digits signify the week of the year, and the last two digits represent the year. For example, a code of "2321" would mean the tire was manufactured in the 23rd week of 2021.

 

[Ahoragi]

 

[Whitenuckler]

View attachment 339335

Ahhh Yours were probably made in 1999 before they changed the format. Pretty good for original tires but tires should be changed every 10 years

 

[Ahoragi]

Yeah it looks like it. I was experience death wobble lately even after replacing literally every front end component. The tires are the last possible culprit.

Ordered some new all terrains and will see what that does.

 

[Dieselhead]

They may be in a different location in an oval circle on your tires, or even on the other side of the tire. I’ve seen them in various locations depending on tire brand.

 

[zrock]

i would have changed those out when i purchased it

 

[Whitenuckler]

i would have changed those out when i purchased it

Your tires have the location for the date. I read on AI that if the tire did not meet DOT specifications then
it didn't need a date code. So those are not the original tires? To me they look about 15 years, but not parked in the sun.

 

[MRD1985]

Check the inside of the tire there is another set of numbers. The date codes are only on one side.

 

[Whitenuckler]

i would have changed those out when i purchased it

HH-Tires Size - Could not find - Also there seems to be no date code numbers XXXX week/year

U9 - Manufacturer -

[td width="100px"]U9[/td][td width="100px"]1U9[/td][td]COOPER TIRE & RUBBER COMPANY[/td][td]TUPELO, MISSISSIPPI[/td][td]UNITED STATES[/td]

 

[semipro]

I was experience death wobble lately even after replacing literally every front end component. The tires are the last possible culprit.

If it occurs within a narrow speed range, then it's probably a tire balance problem; otherwise, it's likely due to an internal tire "separation".

 

[Whitenuckler]

If it occurs within a narrow speed range, then it's probably a tire balance problem; otherwise, it's likely due to an internal tire "separation".

Could be the wheels too. Make sure you still have the proper hub centric wheels and get a good balance job before trying. Look for somewhere that has Hunter Road Force if you can. Try not to use sticky weights.

 

[johneh]

Jeeps are famous for high-speed wobble
Check this page

Google Search

 

[johneh]

• • Decoding the TIN:
    The TIN provides valuable information about the tire:
    
    • • Manufacturing Location: The first few characters of the TIN often indicate the specific manufacturing plant.
        
      • Tire Size and Type: Some characters within the TIN may identify the tire's size and type.
        
      • Date of Manufacture: The last four digits of the TIN reveal the tire's manufacturing date. The first two numbers represent the week of the year, and the last two represent the year according to Continental Tires. For example, "1023" would mean the tire was manufactured in the 10th week of 2023.