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E36/7 Z3 (1996-2002)
E36/7 Z3 Roadster, Z3 coupe, Z3 M Roadster and Z3 M Coupe talk with our gurus here.

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Old 04-16-2005, 10:07 AM
Dennis33's Avatar
Dennis33 Dennis33 is offline
BMW Z4 Coupe
Location: Maineville, Ohio
Join Date: Nov 2003
Posts: 165
Mein Auto: 2007 Z4 Coupe 3.0si
Question Spark Plug replacement S54 - ?

I have 32K miles on my S54.
When should the spark plugs be replaced?
What is the best spark plug replacement?
BMW Z4 Coupe 3.0si (2007)
- Jet Black exterior
- Red leather interior
- 6-speed
- Sports Mode
- Sports Suspension
- BBS CH 18" wheels (8.5" & 10.0")
- ///M Sport Seats
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Old 04-16-2005, 10:13 AM
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Randy Forbes Randy Forbes is offline
Investigative Tinkerer
Location: SW Florida
Join Date: Apr 2002
Posts: 4,984
Mein Auto: ///Motorized Vehicles
Originally Posted by Dennis33
I have 32K miles on my S54.
When should the spark plugs be replaced?
What is the best spark plug replacement?
Wow, more than me (30,891 yesterday)
50,000 miles (called for at Insp.II if I'm not mistaken)
I plan to use OEM

Randy Forbes
1957 Austin-Healey 100/6 Wine Red
1961 McCulloch R1 go-kart Screaming Yellow
1999///M Rdstr Cosmos Black Eurosport Twinscrew S/C
1999///M Coupe Estoril Blue Eurosport Twinscrew S/C
2001///M Rdstr Steel Gray
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Old 04-16-2005, 10:32 AM
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Pinecone Pinecone is offline
M Mad
Location: Maryland
Join Date: Apr 2002
Posts: 10,479
Mein Auto: M Roadster/M3
I don't know about the S54, but Bob Tunnell really likes the NGK iridiums in his S50/S52 autocross cars.
Terry Carraway

'95 Alpine M3 LTW
'00 Dakar M Roadster
'02 Topaz M3
Red/White SRF #4 (Chassis 561)
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Old 04-16-2005, 02:11 PM
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QikSilver QikSilver is offline
Too much is never enough
Location: Ft Lauderdale, FL
Join Date: May 2003
Posts: 266
Mein Auto: 01 M roadster
I replaced mine 2 weeks ago when I checked my valve clearance at 11.5K miles. The stock plugs were NGK R's with fat electrodes, usually a sign of non-platinum. I don't like putting used plugs back, so I replaced them with NGK iridiums.

01 M roadster, F: GC/Koni short coilover struts, Eibach, Wilwood front brakes, GC tubular swaybar. R: TC Kline springs, short Bilsteins, IE sub & swingarm bushings & shock mounts, 3.23 gear, Rogue dual-ear cover, Eisenmann 4x83 pipes. MISC: Sport mode, Rogue pulleys, keyless, RG Motorsport intake, OZ Superleggera 18" 3 piece.
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