N55 50,000 Mile Review

RPM2-85 · 09-13-2018, 10:06 AM

Featured on BIMMERPOST.com

Welllll not sure if I have the highest mileage M2 but I intend to when its all over.

Bought this car new. Have had it tuned forever in one capacity or another. Right now running:

Hex stage 2
Wagner Evo FMIC
Fabspeed Catted DP
255/275 PS4S

Thats it and really has been a peach. My commute is long but this was the perfect thing to make the best of it.

The car itself? FLAWLESS. Needed nothing thus far but fluids which I change every 5k miles. 22 miles a gallon average.

Overall couldn't be happier. Such a reliable thing. Driven from NJ to Maine twice recently. One was a 9 hour stint. BMW nailed it with this package. Just the right amount of everything and nothing. Very impressed and when it gets to 100k I will update agin. Give me another two years.....

untzklee · 09-13-2018, 11:18 AM

Nice!

F87E30 · 09-13-2018, 11:40 AM

Very cool, i hope to have a trouble free experience with mine just like you did with yours.

Beakster · 09-13-2018, 11:59 AM

That is super awesome to hear. I swore I would never buy a BMW (after multiple leases) but I purchased my M2 a couple of weeks ago. She is a keeper for sure!

mr_lab_rat · 09-13-2018, 11:02 PM

Have you done any valve cleaning? All direct injection engines suffer from carbon build up on top of the valves. I'm planning to get mine cleaned chemically every two years.

RPM2-85 · 09-14-2018, 06:43 AM

I use a simple fuel additive and they work really well. Either the STP super concentrate fuel system cleaner, or my favorite, liqui-moly. I’ve also ran a degunker through the block. Thing rarely skips a beat at idle. You feel it smooth out after running the stuff too.

cecaa850 · 09-14-2018, 08:54 AM

Quote:

Originally Posted by RPM2-85

I use a simple fuel additive and they work really well. Either the STP super concentrate fuel system cleaner, or my favorite, liqui-moly. I’ve also ran a degunker through the block. Thing rarely skips a beat at idle. You feel it smooth out after running the stuff too.

That doesn't clean the valves on a DI engine.

chiefsubjugator · 09-14-2018, 10:58 AM

That's awesome! How's the interior holding up? Is the leather looking pretty good still? Have you developed any rattles?

AndrewC1989 · 09-14-2018, 11:57 AM

Quote:

Originally Posted by cecaa850

That doesn't clean the valves on a DI engine.

+1

Fuel additives aren't going to do shit. You need to walnut blast the intake valves every 50k miles.

jessetaylor1 · 09-14-2018, 12:01 PM

Great to know. How are the clutch and brakes?

velociti · 09-14-2018, 01:52 PM

Quote:

Originally Posted by mr_lab_rat

Have you done any valve cleaning? All direct injection engines suffer from carbon build up on top of the valves. I'm planning to get mine cleaned chemically every two years.

Probably overkill. It's pretty well documented that N54s accumulate a lot of carbon, and probably need their valves walnut blasted every 40-50k miles. Those who have walnut blasted their N55s at that kind of mileage have shown far less buildup. 80k-100k miles is probably a more useful interval for the N55.

cecaa850 · 09-14-2018, 01:54 PM

Quote:

Originally Posted by andrewc89

+1

Fuel additives aren't going to do shit. You need to walnut blast the intake valves every 50k miles.

BG offers an induction service that sprays a chemical in the throttle body that is supposed to clean valves and intake passages. I wonder how that would work periodically. Their other chemicals seem to work really well.

mr_lab_rat · 09-14-2018, 08:34 PM

Quote:

Originally Posted by cecaa850

BG offers an induction service that sprays a chemical in the throttle body that is supposed to clean valves and intake passages. I wonder how that would work periodically. Their other chemicals seem to work really well.

That's what I want to do instead of the walnuts.

Orange fever · 09-21-2018, 02:12 PM

That's awesome to hear!!! Hex stg2 FTW!!!

heavyD^2 · 09-21-2018, 03:01 PM

Quote:

Originally Posted by andrewc89

+1

Fuel additives aren't going to do shit. You need to walnut blast the intake valves every 50k miles.

You should be able to go longer than 50k miles on newer DI engines like the N55. I know guys with ecoboost engines that went over 100k miles and the deposits weren't that bad. This may vary from manufacturer but a little deposit is not a big deal. It's when the valves are totally coked up that you should look into it as you will start getting misfires. Using lower NOACK oils helps also as some oils can accelerate the issue.

AndrewC1989 · 09-21-2018, 03:42 PM

Quote:

Originally Posted by heavyD^2

You should be able to go longer than 50k miles on newer DI engines like the N55. I know guys with ecoboost engines that went over 100k miles and the deposits weren't that bad. This may vary from manufacturer but a little deposit is not a big deal. It's when the valves are totally coked up that you should look into it as you will start getting misfires. Using lower NOACK oils helps also as some oils can accelerate the issue.

True, N55 might be less often. I'm coming from an N54 car so I'm thinking of that maintenance nightmare.

GoneIn4Secs · 09-21-2018, 04:58 PM

Good to hear OP

I plan on keeping my OG '18 as well

akkando · 09-22-2018, 06:40 PM

Quote:

Originally Posted by andrewc89

Quote:

Originally Posted by heavyD^2

You should be able to go longer than 50k miles on newer DI engines like the N55. I know guys with ecoboost engines that went over 100k miles and the deposits weren't that bad. This may vary from manufacturer but a little deposit is not a big deal. It's when the valves are totally coked up that you should look into it as you will start getting misfires. Using lower NOACK oils helps also as some oils can accelerate the issue.

True, N55 might be less often. I'm coming from an N54 car so I'm thinking of that maintenance nightmare.

n55 should be checked at 80-100k miles. So not that often over the lifetime of car.

AndrewC1989 · 09-22-2018, 06:42 PM

Quote:

Originally Posted by akkando

n55 should be checked at 80-100k miles. So not that often over the lifetime of car.

Yup. Forgot it isn't an n54

RsPhi135 · 09-22-2018, 08:21 PM

I’ve done alot of intaking cleanings on the N54 and N55. I’ve done A handful on higher mileage N55s few with over 120k and just about everyone of them were almost spotless or have just a very think layer of cabon that you could literally just take your finger and wipe off and see the silver of the aluminum.
I came to the conclusion that the problem was reduced drastically and won’t need to worry about it.

09-13-2018, 10:06 AM	#1
RPM2-85 Second Lieutenant 271 Rep 208 Posts Drives: 2017 M2 AW Join Date: Oct 2016 Location: NJ iTrader: (0)	N55 50,000 Mile Review Featured on BIMMERPOST.com Welllll not sure if I have the highest mileage M2 but I intend to when its all over. Bought this car new. Have had it tuned forever in one capacity or another. Right now running: Hex stage 2 Wagner Evo FMIC Fabspeed Catted DP 255/275 PS4S Thats it and really has been a peach. My commute is long but this was the perfect thing to make the best of it. The car itself? FLAWLESS. Needed nothing thus far but fluids which I change every 5k miles. 22 miles a gallon average. Overall couldn't be happier. Such a reliable thing. Driven from NJ to Maine twice recently. One was a 9 hour stint. BMW nailed it with this package. Just the right amount of everything and nothing. Very impressed and when it gets to 100k I will update agin. Give me another two years.....
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09-13-2018, 11:18 AM	#2
untzklee Private First Class 46 Rep 69 Posts Drives: BMW M2 Join Date: Aug 2015 Location: Orange County iTrader: (0)	Nice!
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09-13-2018, 11:40 AM	#3
F87E30 Enlisted Member 40 Rep 40 Posts Drives: E30 Join Date: Aug 2017 Location: Texas iTrader: (0)	Very cool, i hope to have a trouble free experience with mine just like you did with yours.
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09-13-2018, 11:59 AM	#4
Beakster Private 111 Rep 66 Posts Drives: 2018 AW M2 w/3 pedals Join Date: Jun 2013 Location: Ventura County, CA iTrader: (0)	That is super awesome to hear. I swore I would never buy a BMW (after multiple leases) but I purchased my M2 a couple of weeks ago. She is a keeper for sure! __________________ 2018 M2 AW 6 MT Executive
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09-13-2018, 11:02 PM	#5
mr_lab_rat Major 564 Rep 1,092 Posts Drives: 2017 M2, 2018 X1 Join Date: Jul 2017 Location: Vancouver iTrader: (0)	Have you done any valve cleaning? All direct injection engines suffer from carbon build up on top of the valves. I'm planning to get mine cleaned chemically every two years.
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09-14-2018, 06:43 AM	#6
RPM2-85 Second Lieutenant 271 Rep 208 Posts Drives: 2017 M2 AW Join Date: Oct 2016 Location: NJ iTrader: (0)	I use a simple fuel additive and they work really well. Either the STP super concentrate fuel system cleaner, or my favorite, liqui-moly. I’ve also ran a degunker through the block. Thing rarely skips a beat at idle. You feel it smooth out after running the stuff too.
	Appreciate 0 Quote

09-14-2018, 10:58 AM	#8
chiefsubjugator Private First Class 91 Rep 135 Posts Drives: 2020 M2C 6MT LBB Join Date: Dec 2017 Location: Northern California iTrader: (0)	That's awesome! How's the interior holding up? Is the leather looking pretty good still? Have you developed any rattles?
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09-14-2018, 12:01 PM	#10
jessetaylor1 Second Lieutenant 171 Rep 294 Posts Drives: 2018 AW LCI Join Date: Nov 2017 Location: USA iTrader: (0)	Great to know. How are the clutch and brakes?
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09-21-2018, 02:12 PM	#14
Orange fever Colonel 2351 Rep 2,829 Posts Drives: E36M,E46M,E90M,X5M,i3,M2,i8 Join Date: Dec 2007 Location: SoCal. in the hood!!! iTrader: (5)	That's awesome to hear!!! Hex stg2 FTW!!! __________________ BMW I12 i8 Frozen Yellow- H&R springs, 22" Radenergie F10 Monoblock Forged /// F87 M2 Aw -Vorsteiner Aero Kit, VFF-107,Macht Schnell-Springs,VF-Engineering/Hex tuning Stage Two,ER DP,Stock Exhaust,Drop-In Bmc Filter,AA Intercooler,FTP Charge pipe+boost pipe/// Wish list :Mexico delivery 2024 BMW M2 (G87)
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09-21-2018, 04:58 PM	#17
GoneIn4Secs Banned 1287 Rep 1,675 Posts Drives: BSM F87 LCI (DCT) Join Date: Jun 2018 Location: GTA iTrader: (0)	Good to hear OP I plan on keeping my OG '18 as well
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09-22-2018, 08:21 PM	#20
RsPhi135 Private 14 Rep 60 Posts Drives: 2018 BMW M2 Join Date: Jul 2017 Location: Worcester, MA iTrader: (0)	I’ve done alot of intaking cleanings on the N54 and N55. I’ve done A handful on higher mileage N55s few with over 120k and just about everyone of them were almost spotless or have just a very think layer of cabon that you could literally just take your finger and wipe off and see the silver of the aluminum. I came to the conclusion that the problem was reduced drastically and won’t need to worry about it.
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