Tires: Goodyear Speedway F70-15 Tire code 1972, nova scotia ca, spare tires

Question
I have an original spare tire as above with the code B3NDLJDX which is on the opposite side from DOT not following it. Can you tell me date of tire.  I can't find info on older tires.  Thanks

Answer
Roger,

I wrote up a web page to cover this sort of thing:

http://www.barrystiretech.com/dotcoding.html

First, it appears you have everything except the date code.

B3 = Michelin, Nova Scotia, CA.

ND = ??????  In fact, my book doesn't list a code for F70-15 at all, but I have to keep in mind the tire is almost 40 years old.

LJDX = Well, that is tire manufacturer specific and there aren't any decoders available for this part of the code.

Based on this, I would say the sequence you gave me isn't a DOT code.

Normally, DOT codes are in the immediate vicinity of the letters "DOT", so I would suggest you look again.

But I wonder why this is important.  I also wonder how you know it is from 1972.  Perhaps because it was in the trunk of a 1972 automobile?  Be aware that the spare might not be an original spare.  Many vehicles of that era had space-saver spares.  Google "space saver spare tires" for images and you'll see what they look like.