Porsche Cayenne 2015–2018 — technical service bulletin
Bulletin No. 45-21 · NHTSA communication 10199853 · issued Jul 23, 2021
Technical service bulletin
communication type
Tires
component
2015–2018
model years
8
vehicle entries
Official summary
List of approved wheels, tires, and spacers for the Cayenne.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.