NHTSA proposes tire fuel efficiency stickers American car buyers are used to seeing window stickers with information about fuel efficiency, crash test ratings and emissions.

Motorcycle owners can contact Harley-Davidson customer service at 1-800-258-2464 for more information. They can also contact NHTSA's Vehicle Safety Hotline at 1-888-327-4236 or visit www.nhtsa.gov.

The company decided on Dec. 3 that the tires were out of compliance and needed to be recalled. The NHTSA said owners can contact the PCTNA customer service at 1-310-205-8355, extension 109.