Spark Plug Question

[germanspeed]

Hey guys, i need some suggestions on what spark plugs to use. I have a BMW 528 sport. What spark plugs offer the best performance and reliability? Thanks for the help.....

[big_sur]

i've always used NGK but I doubt there's any performance\reliability difference between NGK\Bosch\Denso. i would just put stock back in it but price wise bosch is usually the cheapest between the three.

[DINANized3]

get bosch platinum + 2's i love and no gapping

[UltimateDriver]

I just replaced my stock NGK's it was interesting to see that stock plugs had four prongs! huh, who knew?

I replaced them with NGK iridium.

It was a great improvement, it runs very smooth now, I am also getting 1-2mpg better fuel efficiency on the last two tanks since chainging, acording to the OBC.

Good luck with the change

[big_sur]

well you're always going to see an improvement going from a worn out carbon covered plug to shiny new one.

[Quack]

use NGK iridium, I heard nothing but good things about them, try to stay away from Bosch platinum +4's they burn to hot & will cause misfires under hard acceleration