{"nhtsa_id":10203069,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-11-05","date":"2021-10-15","document_id":"No. 86-21","mfr_campaign":null,"replaces":null,"component":"TIRES; WHEELS","mfr_system":null,"summary":"Instructions on the manufacturer's certificate for approved summer tires, wheels, and spacers.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10203069-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10203069-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10203069","components":[{"id":"tires","name":"Tires","parent":null},{"id":"wheels","name":"Wheels","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PORSCHE","model":"911 GT2","year_from":2008,"year_to":2009,"match":"base","vehicle_ids":["2008_porsche_911","2009_porsche_911"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}