{"nhtsa_id":10199877,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-08-04","date":"2021-07-30","document_id":"No. 73-20","mfr_campaign":null,"replaces":null,"component":"WHEELS; TIRES","mfr_system":null,"summary":"List of approved wheels, tires, and spacers for the 928 model, from Model Years 1978 to 1995.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10199877-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10199877-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10199877","components":[{"id":"tires","name":"Tires","parent":null},{"id":"wheels","name":"Wheels","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PORSCHE","model":"928","year_from":1978,"year_to":1980,"match":null,"vehicle_ids":[]},{"make":"PORSCHE","model":"928","year_from":1981,"year_to":1982,"match":"exact","vehicle_ids":["1981_porsche_928","1982_porsche_928"]},{"make":"PORSCHE","model":"928","year_from":1984,"year_to":1984,"match":"exact","vehicle_ids":["1984_porsche_928"]},{"make":"PORSCHE","model":"928","year_from":1985,"year_to":1988,"match":null,"vehicle_ids":[]},{"make":"PORSCHE","model":"928","year_from":1989,"year_to":1994,"match":"exact","vehicle_ids":["1989_porsche_928","1990_porsche_928","1991_porsche_928","1992_porsche_928","1993_porsche_928","1994_porsche_928"]},{"make":"PORSCHE","model":"928","year_from":1995,"year_to":1995,"match":null,"vehicle_ids":[]}],"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":[]}