I just read a post where someone claimed to have read the tire date code and interpreted the code as indicating the tire was five years old when in reality the tire was 15 years old.
Now I know there and been a number of posts telling people how to read the date code but clearly there is still some confusion. So I did a quick search for pictures I could find of actual date codes.
First off we need to remember than in 2000 the DOT serial date code changed from a three digit date code to a four digit date code. The DOT serial is a series of letters and numbers that come after the symbol DOT on the sidewall of your tires. Also the complete serial that includes the date code portion is not normally on both sides so you may need to do some crawling around. You might even get your son or daughter or even your grandkids to help.
You can also look at passenger tires to get some practice. I know a number of companies mount the tires with the full DOT serial on the outside so it is easier to read but I do not know of any RV manufacturer that has an official policy of making the full serial be on the outside.
So lets look at some examples.
This first example shows the 3rd week of 2001 and we also know the plant code is W2
and below we have an example of 37th week 1998 on the left and 7th week 2009 on the right.
Do not confuse the fact that the 6E7378 ends with four numbers as there is no 73rd week of the year 2078.
If you want to look up the location of the plant that actually made your tires you can go to THIS web page.
Hope this helps clear up any confusion.
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