Interpretation ID: aiam1634
B.F. Goodrich Tire Company
500 South Main Street
Akron
Ohio 44318;
Dear Mr. Vukan: This is in further reply to your letter of August 21, 1974, askin whether tires manufactured by B.F. Goodrich that are filled with 'Tyrfil' will be subject to the requirements of Motor Vehicle Safety Standard No. 119.; On the basis of the information you have provided,we have determine that tires filled with Tyrfil are not 'pneumatic' tires, and are therefore subject neither to the requirements of Standards Nos. 109 nor 119. We find that Tyrfil, which is a solid polyurethane, differs significantly as a tire-filling medium from cellular foam, whose use has been determined to be within the scope of Standards Nos. 109 and 119 (37 FR 24908, November 23, 1972).; Sincerely, Robert L. Carter, Associate Administrator, Motor Vehicl Programs;