I put Autolite Iridium plugs in my '06 N52 20k miles ago because of a crazy sale/rebate. It runs as smooth as a new one.
BMW parts reviews
I'm at 365,000 km and switched to Shell Rotella T6 probably 30-40k ago. Oil consumption was at last halved - the detergents in that oil really help clean up deposits in the rings, or so I'm told.
I recently bought brembo pads and rotors for my 330 e46 , got a great deal on them
I bought the Zimmerman/Akebono kit when the E92 needed front brakes. I'm amazed how brake dust has been nearly eliminated and it has good bite.
You have the N47 engine, which is known for premature failure and excessive wear of the timing chain. However, it's generally cars prior to 2011 that have this issue, with later iterations safer.
i always use liqui moly and mann filters. my buddy had an extra can of this stuff in his garage and gave it to me. i put it in, oil consumption went to 0.
Replaced the new Mahle/Behr one with a new Wahler one, and now it runs at 97° under low load and 80° under high load, as it should, and seems to be fine.
Note, I've replaced it with OEM glass, the installer said something from BMW that's the issue, they don't use enough silicon to give the windshield some flex.
Looks sharp, but remember slotted and drilled rotors are really pretty worthless in most cases until you get to really aggressive track only brake pads at extremely fast advanced level pace (or race pace).
Most cars with timing chains never need them replaced, its just badly designed timing chains like the BMW ones that do.
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