No. 257-22

Service
Technical Information
257/22 ENU
4407
4
Modified Wrench Size of the Wheel Bolts (257/22)
Model Line:
718 Cayman/Boxster (982)
911 (992)
Taycan (Y1A/Y1B/Y1C)
Panamera (971)
Macan (95B)
Cayenne (9YA/9YB)
Model Year:
As of 2022
Concerns:
Wheel bolts
Cause:
On the vehicles mentioned, modified wheel bolts were used in series production from the date specified
below. The wrench size of the wheel bolts was reduced from 19 mm to 17 mm and the surface coating
was adapted.
Information
Please note that mixing wheel bolts with a wrench size of 17 mm and 19 mm is not permitted. If there
is a need for replacement, the wheel bolt corresponding to the original delivery specification must be
procured again. Please ensure that the tool kit and the rim lock match the original delivery specifications
for the vehicle when replacements are required.
Information
Wheel bolts with a wrench size of 17 mm or 19 mm are given the same tightening torque analogue to the
relevant Workshop Manual.
 Workshop Manual '4X00IN Tightening torques for wheels'
Date of
Introduction:
Date of use of wheel bolts with a key width of 17 mm in series production.
Model line
Date of Introduction
718 Cayman/Boxster (982)
Nov 3, 2022
911 (992)
Nov 3, 2022
Taycan (Y1A/Y1B/Y1C)
Oct 12, 2022
Panamera (971)
Oct 4, 2022
Macan (95B)
Oct 4, 2022
Cayenne (9YA/9YB)
Aug 30, 2022
AfterSales
Jan 17, 2023
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4
Service
4407
Technical Information
ENU 257/22
Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a
discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.
© 2023 Porsche Cars North America, Inc.
Jan 17, 2023
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AfterSales