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Old 03-18-2020, 10:16 AM
StephenVA StephenVA is offline
Join Date: Jun 2013
Location: Virigina, USA
Posts: 2,259
StephenVA is on a distinguished road
Haven't seen any reports of FACTORY plugs having issues. Most of the plug breakage, cracked insulators (The white porcelain tops) and "thread pulling" are installer abuse/wrong torque settings, strong arm tactics, etc. See one too many, In a past life I have been involved in field engineering reports for Champion Spark Plugs 20+ years ago. 99% of these issues is from the installer not following any basic shop processes.
Q: Do you have a broken plug or a known thread damage issue or are you looking to change plugs and want a little reassurance that this application tends NOT to have any inherent issues? If yes, try the mini forums for details.

Tip: Let the engine be cool to the touch, remove the coil on plug, use the right size wrench with a rubber insert, and lightly unscrew the plug. If tight, add a drop or two of WD-40 and let it sit for a while.

2005 X5 4.8IS
The Blue ones are always FASTER....

Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green

Last edited by StephenVA; 03-18-2020 at 01:31 PM.
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