Interpretation ID: nht68-1.3

DATE: 08/22/68

FROM: AUTHOR UNAVAILABLE; R. M. O'Mahoney; NHTSA

TO: E.T.R.T.O.

TITLE: FMVSS INTERPRETATION

TEXT: This in response to your letters of May 24, requesting (1) a footnote to Table 1-A to provide that equivalent millimeter designations may be marked on tire sizes in addition to the dimension sizes in inches; and (2) a footnote to Table 1-C to provide that the tire sizes provided in this table can be marked on the tire by giving the millimeter equivalent either before or after the size designation in inches.

We do not consider that Table 1-A of the standard, as presently written, prohibits equivalent marking in millimeters as long as the conversion from inches to millimeters is exact and the tire meets the size and load carrying requirements shown in Table 1-A.

Similarly, we do not consider that the standard as presently written prohibits the marking of the tire with equivalent millimeter sizes before or after the marking which gives the size of the tire in inches.

In view of the above, a footnote is not considered necessary.