QuestionWe have Wrangler SR-A tires on our Jeep that were Made in Canada. We are trying to figure out what date the tires were made. The other numbers & symbols are: M + S (mud & Snow) P235/65R17 1035 DOT 4B87 DYHR
Can you help us out. Thanks in advance
AnswerKarenann,
First locate the letters "DOT" on the sidewall of the tire. Nearby will be the DOT code. DOT codes are 10 to 12 digits long. BTW the digits can be numbers or letters.
The first 2 digits are a code for the manufacturing plant.
The next 2 digits are a code for the tire size.
The next 3 or 4 digits are a code for the type of tire.
The last 3 or 4 digits are the date code. The format is week/week/year/year or week/week/year. These are always numbers.
Starting in the year 2000, the date coding used was 4 digits. That means the largest number you should see for the year is 09. Before 1999 the format was 3 digits. 1999 and 2000 are transition years, so you will find both 3 and 4 digits.
The date code only has to be on one side – and it is permissible for there to be a partial DOT code, so long as one side has the complete code.
It's obvious that you have found the partial DOT code. I can tell you that particular tire was made in Napanee, Canada. The tire size is P235/65R17. But you already know that!
Plus I can tell that Goodyear is using the 4 digit version of the type code. AND, it is also obvious the date code is missing - so look on the other side.
