Which spark plugs

[b21playa]

Hi all

Need to change my plugs, not sure whether to go oem Bosch zmr5tpp330 or go for a colder plug like the ngk 97506

What are you thoughts?

Thanks in advance

[Boosted M5]

Depends on whether you're tuned or stock. I had stock plugs with a stage 1 and then switched to colder with stage 2

[b21playa]

Originally Posted by Boosted M5

Depends on whether you're tuned or stock. I had stock plugs with a stage 1 and then switched to colder with stage 2

I’m stock as far as I know - brought the car used. Should I stick with oem at preset gap?

[Pikey Motorsports]

Oem if your stock

[b21playa]

Originally Posted by Pikey Motorsports

Oem if your stock

Many thanks.

Previous owner said he replaced them but no proof so thought I’d do them for the sake of £100

[AirBull]

Bosch told me they are superseding the 8179 double platinum spark plug in our F10 M5 for the 8165 that goes in the new F90 M5 (ZR5TPP320,) but the Bosch website is still showing the 8179. Basically just goes from an 8mm diameter center electrode to a 6mm diameter center electrode.

I'm still not certain and would like to know if there is a better Iridium tipped (NGK) spark plug available for stock applications? NGK says the Laser Iridium SILZKBR8D8S is a direct replacement, can anyone confirm? 8 heat range (Bosch says the 8179 is a manufacturer 5 heat range.)

https://f10.m5post.com/forums/showthread.php?t=1605952

[M5Rick]

Originally Posted by AirBull

Bosch told me they are superseding the 8179 double platinum spark plug in our F10 M5 for the 8165 that goes in the new F90 M5 (ZR5TPP320,) but the Bosch website is still showing the 8179. Basically just goes from an 8mm diameter center electrode to a 6mm diameter center electrode.

I'm still not certain and would like to know if there is a better Iridium tipped (NGK) spark plug available for stock applications? NGK says the Laser Iridium SILZKBR8D8S is a direct replacement, can anyone confirm? 8 heat range (Bosch says the 8179 is a manufacturer 5 heat range.)

https://f10.m5post.com/forums/showthread.php?t=1605952

Just replaced the spark plugs on Merc CLK 200k with double platinum bosch ones at 48k.I chose these as on sell site they say Iridium plugs should be changed at 30k so can't do a big mileage on them and on an M5 they are a pain to get to so when M5 plugs are due I'll go for the DP's also.

[TheHouseWon]

I use NGK 97506

https://www.rmeuropean.com/Products/...64-MFG220.aspx

These are it. You might find better pricing if you shop around.

[b21playa]

Originally Posted by TheHouseWon

I use NGK 97506

https://www.rmeuropean.com/Products/...64-MFG220.aspx

These are it. You might find better pricing if you shop around.

Stock motor?

[TheHouseWon]

Originally Posted by b21playa

Stock motor?

Yes. I have stage 2 tune and downpipes. Has worked fine for 1000's of miles.

[b21playa]

Ah right. Sorry I meant to say stock tune as well.

I’m keeping mine stock so looking for best plugs

[b21playa]

Also what gap should stock plugs be?

[Dwaynos]

Originally Posted by b21playa

Also what gap should stock plugs be?

Just leave them at preset gap if you're stock. Obviously check them when you're fitting to make sure they all look equal, sometimes the gaps can be closed up accidentally when packing.

[b21playa]

Originally Posted by Dwaynos

Just leave them at preset gap if you're stock. Obviously check them when you're fitting to make sure they all look equal, sometimes the gaps can be closed up accidentally when packing.

I wanted to check stock gap but not sure what they should be. Do you know?

[M5Rick]

Originally Posted by b21playa

I wanted to check stock gap but not sure what they should be. Do you know?

.032 inch.

[Info@mad-us.com]

Real question is do you plan on tuning in the future? If yes gap them down now.