Spark Plugs
 

I believe we are supposed to change out E70 spark plugs around 60k miles.

I know people think OEM which are Bosch platinum are better.
$8.56
More Information for BOSCH ZR5TPP33S

I have been told Iridium last longer. They have these two on rock auto.
$6.01
More Information for DENSO 5356
$9.19
More Information for DENSO 3501

It says the $9.19 Denso iridium lasts 100k miles. I think the Bosch platinum last around 60k miles. Anyone know how long the regular $6.01 Denso iridiums last?
Any thoughts on what is preferred?

Same answer as on Bimmerfest

OE or OEM is preferred

I've been using NGK plugs for 15 years in my BMW's. Wouldn't recommend Bosch personally.

Why?

Oddly, NGK is the OEM for my 996TT.

Spark Plugs
 

I have part numbers for the 4.8 in my video. NGK
https://youtu.be/eI7SdnwiYuY
Youtube: DIY_NATION_TH

The Bosch is OE

What’s the difference between OE and OEM?

OE is Original Equipment (came from the factory and replacements purchased at the dealer) and OEM is Original Equipment Manufacturer. That means, they are a registered manufacturer with the factory but doesn't mean its an OE part.

What is the OE for E70 xdrive35i? The v8 is NGK but I'm being told the 6 cylinder is Bosch.

Another why?

I just purchased Bosch for our 4.8, haven't installed them yet. Also have Bosch in my E36.