Correct spark plugs for stock M5?

[HeyKC]

Originally Posted by aayaz

I have read that going a step colder on a stock engine could potentially be harmful and could be harder to start in cold weather conditions

Any link on this? I had always figured when I change my plugs it would only be better if I go 1 colder.

[aayaz]

Originally Posted by HeyKC

Any link on this? I had always figured when I change my plugs it would only be better if I go 1 colder.

I actually read it on a listing from turner motorsport regarding 1-step colder NGK spark plugs. It's in the product details section. Although, not really sure if it actually could do any harm or not, i've never tried.

https://www.turnermotorsport.com/p-5...plug-set-of-8/

[technician117]

Just a quick update.

I've put almost 2,000 miles on the new plugs - stock heat range but the "updated" part number per Bosch, as referenced earlier in this thread. No issues to report. Since I also replaced all of the injectors and coils at the same time, I can't say the plugs made any impact, but I CAN say they haven't caused any issues yet.

[bbellz]

Originally Posted by technician117

Just a quick update.

I've put almost 2,000 miles on the new plugs - stock heat range but the "updated" part number per Bosch, as referenced earlier in this thread. No issues to report. Since I also replaced all of the injectors and coils at the same time, I can't say the plugs made any impact, but I CAN say they haven't caused any issues yet.

Did you use the Bosch 8165 plugs? The are $4.73 each at Rockauto!

[technician117]

Originally Posted by bbellz

Did you use the Bosch 8165 plugs? The are $4.73 each at Rockauto!

Yes, I posted about it earlier in this thread if you want to check it out.

Also yes, RockAuto is where I bought mine.

[bbellz]

Originally Posted by technician117

Yes, I posted about it earlier in this thread if you want to check it out.

Also yes, RockAuto is where I bought mine.

Thanks. That's very good to hear.