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Interpretation ID: nht79-4.23

DATE: 10/22/79

FROM: AUTHOR UNAVAILABLE; Frank Berndt; NHTSA

TO: Uniroyal GmbH

TITLE: FMVSR INTERPRETATION

TEXT: This is in response to your letter of October 12, 1979, asking whether the character height of 5/32nds of an inch, stated in the Uniform Tire Quality Grading (UTQG) Standards (49 CFR 575.104, Figure 1), is considered by the National Highway Traffic Safety Administration (NHTSA) to specify the only acceptable height for UTQG sidewall molding, or whether the agency interprets this measurement as a minimum value.

The specification of 5/32nds of an inch tire sidewall characters was intended by NHTSA to establish a minimum requirement to assure readability of the UTQG information presented. The agency has no objection to the use of characters of a height greater than 5/32nds of an inch, so long as all characters used to convey UTQG information are of the same height.