General Question

2davidc8's avatar

What's a car tire manufacture date of 'V4B3'?

Asked by 2davidc8 (4979 points ) February 19th, 2014

I know that the manufacture date of car tires are stamped on the sidewall and are 4 digits, with the following meaning: the first two digits are the week of the year, and the last 2 digits are the year. For example, 4110 means the tire was manufactured on the 41st week of the year 2010.

But I have 2 tires that are stamped V4B3. Can you help me interpret that?

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12 Answers

Cruiser's avatar

I don’t know for sure but those 4 characters could identify the exact tire mold and location where the tire was made. Usually more numbers will follow that are hand stamped in the tire the day it is pulled from the mold that will identify the date per this article

hearkat's avatar

I use Tire Rack as my reference for tire information. Here is their article explaining date codes.;

Cruiser's avatar

@hearkat That was the same site I intended to link! I screwed up on my link and glad you were able to save the day.

2davidc8's avatar

@Cruiser @hearkat Based on the article you pointed me to, it seems that my tires were maybe installed backwards. Is that possible?

Cruiser's avatar

@2davidc8 My sons works in a auto repair garage and he is the main tire installer and I will ask him about this and get back to you.

2davidc8's avatar

Thanks, @Cruiser. The reason I ask is that two of my tires have a date of 4110, but two show V4B3. The Tire Rack article says that the full DOT number is stamped on one side, but tire manufacturers are not obligated to stamp the full number on the other, so many of them put a shortened version on that side. If that’s the case, then I might have the treads going the wrong way on two of my tires.

Cruiser's avatar

@2davidc8 My son just said to check the other side of the tire as tire mfrs. usually only stamp one side of the tire.

hearkat's avatar

@2davidc8 – That was the conclusion I had drawn, as well; however, I reasoned it out like this: tread patterns are made to go in a particular direction and tire manufacturers aren’t likely to make different tires for the left and right side of your car. Therefore, my theory is that the tires on one side should have the full print of information on the sidewall and the tires on the other side should have that minimal information. The only thing that would throw a wrench into my theory is if interior sidewalls are reinforced differently than the exterior, but most tire diagrams I’ve seen seem symmetrical.

Most of the time, the tread pattern is pretty clear in indicating the direction it should face. The Tire Rack site might also show you the tread pattern if you know your make and model, so you could double-check that as a reference. This is why they say to rotate tires between front and back on the same side of the vehicle. I’ve always wondered about my full-size spare, though. What if it’s mounted on the rim for one side of the car, but I get a flat on the opposite side?

2davidc8's avatar

@hearkat What you said in your first paragraph I think is indeed the case with my tires. The tread pattern of the tires on the right side of the vehicle is going the same direction as the left side.

hearkat's avatar

@2davidc8 – Good; is the information on the sidewalls different?

2davidc8's avatar

@hearkat Yes, on the right side it shows DOT, then a bunch of letters and numbers, ending with 4110. On the left side, there’s just DOT V4B3. I figure that the other side of these tires probably have the DOT with a bunch of letters and numbers and ending in 4110. I plan to confirm this the next time the car is up on a rack.

hearkat's avatar

So they were made in the 41st week of 2010, and you’ve proven my theory. Eureka!

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