Dot dating codes for motorcycle tires

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The 11-character DOT code, shown in the red box, appears on the inside of tires.

Recently, some tire manufacturers have begun to stamp partial codes on the outside of tires (facing away from the vehicle) so that checking the date does not necessitate removing the wheel.

An uninformed consumer thinks he or she purchased brand new tires when in reality those tires may have been sitting on the shelf for years.

Even though the tires were never used on a vehicle, they are still several years old.

If the letter B appears, it signifies a belted tire, and an R means the tire is a radial.

These last four digits of the DOT code represent the manufacture date of the tire.

This measurement is inches rather than millimeters.

The MC designates that this is a motorcycle tire, and the 67H is the load and speed index.

Expiration dates for tires manufactured before 2000 were based on a 10-year scale because the expected life-span of a tire was 10 years.

Current guidance suggests that tires should be expected to last a maximum of only six years. A tire manufactured-date code, shown in the yellow box, may appear on the outside of some tires.

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