Re: Clipper tire size

Posted by DavidPackard On 2021/5/13 16:38:05

Bill, that’s the tire identification information it’s there to identify a particular batch of tire . . . as in recall. Here’s a link to more info.

DOT Tire Identification Number (TIN) | Tirebuyer.com


The size of the tire is likely on the sidewall 180 degrees opposite this ‘secrete code’. As the regulations have changed over the years I bet there are tires in our garages that have a very minimal amount of marking on the sidewall.
Here’s a link showing all of the information that will be found on a modern tire

What do the markings on my tires mean? (leithacura.com)

If it is a radial there will be an ’R’ is the sizing code. Before the regulations mandated a character for the construction details the manufactures were so proud of the tire being a radial that you’ll see that spelled-out in large letters. Over the years tire sizes were stated in inches, such as 8.00 X 15. Then, in the mid 60’s letter designations showed-up, so you might run into an L X 15 tire. Then the metric system was adopted.