911 Carrera 2 Coupe F6-3600cc 3.6L SOHC (1990)
Wheels: Technical Service Bulletins
Wheels - Non Approval of Chrome Plating Aluminum Wheels
Subject:
Chrome Plating
Porsche Aluminum Road Wheels
Model
Group
All
4
Part Identifier
Number
4410
9011
ATTENTION: Service Manager/Service Technician
This bulletin supersedes Technical Bulletin Group 4, Number 8705, Book D, page 163.
Models Affected:
All
General Information:
Porsche does not approve of chrome plating Porsche aluminum road wheels.
Corrosion tests by PAG on chrome plated aluminum wheels have shown heavy pitting, especially with winter
use.
The high difference in potential between the base metal of the wheel and the plating material (chrome, nickel)
may cause pitting and could reduce wheel strength.
Polishing road wheels is an acceptable alternative. When polished, the wheel's protective coating is removed. To
avoid corrosion and discoloration, wheel maintenance will need to be increased.
Warranty Information:
Corrosion and/or discoloration due to a lack of maintenance are not a warranty matter.
Important Note:
Please make a copy of this bulletin and give to your dealership's Sales Manager and General Manager.
December 14, 1990