How To Read Age of Tire From DOT Number Printed on Tire Sidewall

Question

Question:

My trailer tire dot # is TBT1. Do u know how old

asked by: Carol C

0

Expert Reply:

You'll need to look at the last 4 digits of the DOT number on the tire sidewall. For instance if the last 4 digits are 2418, the tire was constructed in the 24th week of 2018. If your trailer tires are 5 or 6 years old and are showing cracks in the sidewalls. I've linked to a trailer tire article that you might find helpful.

If you need replacements, just let me know the tire size and load range, which can also be found on the tire's sidewall.

expert reply by: Mike L

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Answer 1

I don't have access to the tire info for your trailer, but if you can get the size is stamped on the sidewall of the tires that you do have I can give you the best recommendation for that size that we offer. With that info check out the link I…

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Answer 2

That doesn't sound like a standard date code. The code should be a 4 digit number. The first 2 are the week and the last 2 are the year. So for example if it was 2314 that means that tire was made in the 23rd week of 2014. I attached a picture…

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Answer 3

According to my research it looks like you have a Towmax tire and while we don't carry this brand, I did reach out to them directly and they said there should be 3 groupings of numbers/letters after the "DOT" on your tire sidewall. The…

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Answer 4

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 5

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Answer 6

Since both a ST145/R12 size tire, like the Kenda Karrier S-Trail #AM10130, and a 5.30-12 size tire, like the Kenda K353 #AM10068, fit a 12 inch wheel, a ST145/R12 size tire can replace a 5.30-12 size tire. Keep in mind that these tires do have…

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Answer 7

The 5.30-12 tires, being wider, are going to make more contact with the road. This means that the noise, and heat build up will be higher than a 4.80-12 tire but the rolling resistance will actually be less because the tire is larger diameter. The…

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Answer 8

Hi Hayden; that bolt pattern is really uncommon but I believe it can be found on some really old Airstream trailers. There are no modern replacements that will match. The best option is to replace the hub with one that has a common bolt pattern like…

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Answer 9

Tire designations ST205/75D14 and ST205/75R14 are both for special trailer tires with a 205mm width, 75-percent aspect ratio and that fit a 14-inch wheel. The difference between them is the tire's type of construction. The ST205/75D14 tire is a…

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Answer 10

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the…

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Answer 11

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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How To Read Age of Tire From DOT Number Printed on Tire Sidewall

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