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Service bulletin No. 29-21

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10198945
Published by NHTSA2021-07-06
Manufacturer's numberNo. 29-21
Manufacturer's date2021-06-16
NHTSA componentWHEELS

NHTSA's summary

List of approved summer wheels and tires for the 918 Spyder.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Wheels

Vehicles listed
PORSCHE 918 SPYDER2015 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 918 SPYDER2016

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
SPTL26092026-10-02. Service bulletin. Special Tools and Equipment Information for alignment machines - Q3 2026 Software Spec Update Available
SPTL26082026-09-04. Service bulletin. Special Tools and Equipment Information for alignment machines - Q2 2026 Software Spec Update Available
40/26 44072026-07-07. Service bulletin. Wheel Bolt Replacement Requirement - Change from Wheel Bolts with Aluminum Washers to Wheel Bolts with Steel Washers (40/26)
No. D7742026-04-07. Service bulletin. Parts information for Parts Withdrawal - Pressure Sensor (9A790605201) The cars affected are ones that use the part number mentioned.
No. D7712026-04-06. Service bulletin. Parts information for Parts Withdrawal - Hub Cap. Part numbers involved are 9Y0601149F, 9Y0601149G, 9Y0601149H, 9Y0601149J, 9Y0601149L, and 9Y0601149M. The vehicles affected are ones that use the part numbers mentioned.
No. GR6D92025-11-05. Service bulletin. Parts information for the thatcham wheel lock information. Since model year 2015, nearly all new vehicles (SUV's may have Thatcham or previous style wheel lock) come equipped with Thatcham-style wheel locks from the factory. Each vehicle equipped with Thatcham-style wheel locks uses a unique key. The vehicles affected are cars that use this wheel lock
No. 54-242025-03-06. Service bulletin. Manufacturer's Certificate - Approved: Wheels, Tires and Spacers (54/24)
D92025-03-05. Service bulletin. Parts Information - Thatcham Wheel Lock Information
No. 1406a.12022-02-04. Service bulletin. Special tools information for a group of new tools - level 0. Support the 918 Spyder
122-N8C4M-122021-03-06. Service bulletin. Resubmitting at request of Mr. Bernard Hardgrave. Advanced Technical information for center-locking wheel nut tightening.