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View Full Version : Spark Plugs !


Roderick
07-10-2007, 06:41 PM
Planning on changing my spark plugs soon, I have a 95 540i automatic. what type of plugs are all the 540i guys using and what are the best for the model.
Evan
07-10-2007, 06:51 PM
i only use bosch super copper...
ThoreauHD
07-10-2007, 06:54 PM
I use Denso Iridium. Same V8, smaller bore.
markus
07-10-2007, 09:24 PM
i use OEM Bosch ones. I just changed all of mine. Car starts easier and im now averaging 23.8mpg. Sort of unheard of for any V8 but I just went 160 miles on 6.7 gallons of gas.
632 Regal
07-10-2007, 09:27 PM
I got Bosch super and no difference, not worse so a good contender.
bmwrp8
07-10-2007, 09:53 PM
Planning on changing my spark plugs soon, I have a 95 540i automatic. what type of plugs are all the 540i guys using and what are the best for the model.

bosch4platinum on my next plug change ill go back to stock bosch super...
Tiger
07-10-2007, 10:11 PM
Bosch Super is what in the car now... If I had to buy a set now... (I probably do)... then I'd buy from Autohausaz.com... they got the Bosch SuperPlus plug there for under $5 a piece... whereas BMA wants like $7

http://www.boschautoparts.com/Products/SparkPlugs/

SuperPlus is basically the same as Super with longer lasting design.
Tiger
07-10-2007, 10:13 PM
Didn't you hear? One of the guy on the forum put Platinum+4 in his 540 and it ruined his engine... plug literally melted his plug thread and only the coil pack is holding it in.
bmwrp8
07-10-2007, 10:17 PM
Didn't you hear? One of the guy on the forum put Platinum+4 in his 540 and it ruined his engine... plug literally melted his plug thread and only the coil pack is holding it in.

yup but sadly before I saw the thread it was installed...just thinking would that thing happen to me also..mine's m20 2.5 and I dont have individual coil pack
liquidtiger720
07-10-2007, 10:42 PM
i have denson iridiums in right now...

They made a slight difference if any...not worth the extra admission price. Stick with stock.
Jon K
07-10-2007, 11:32 PM
NGK are GREAT PLUGS! Bosch quality is not what it once was. I use NGK BKR7E (check for your application) at $1.70 a plug.
Chris'91'525i
07-10-2007, 11:32 PM
How about NGK's ? I'm thinking of using them on my next plug change.
My past experience with them showed they burned cleaner, as if they run slightly hotter than other stock plugs.
But that was with 'U' groove type NGK's. Anyone know if the BMW NGK plugs have the 'U' groove electrode wire on them ?
J.DeFeo
07-11-2007, 08:34 AM
I use autolites from NAPA. They're like $2 a piece and work great.