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#610042 - 06/17/10 01:44 PM R1200RT Spark Plugs
hopz Offline
Member

Registered: 08/21/05
Posts: 3394
Loc: Colorado Springs, CO
Wondering when you change plugs on the RT?

I've just done a service and the plugs look fine, but at 23k miles intuition just says its time.

Would appreciate your thinking on this.
_________________________
R1200RT
R1100S

Assumption is the Mother of all screw ups.

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#610044 - 06/17/10 01:46 PM Re: R1200RT Spark Plugs [Re: hopz]
Alan D Offline
Member

Registered: 06/17/04
Posts: 753
Loc: Cincinnati Ohio USA
I believe the manual says 24K.
_________________________
2013 Triumph Trophy
2007 R1200RT (broken drive shaft 700 mikes from home...What!!)
2000 R1100RT (Sold, great bike!)
1998 Suzuki DR350 (stolen, hope it won't start)


IBA 24605

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#610078 - 06/17/10 03:19 PM Re: R1200RT Spark Plugs [Re: Alan D]
Hall Vince Offline
Member

Registered: 10/20/07
Posts: 414
Loc: South UK
Mines in for a 24k service now. Plugs will be changed as per schedule.
_________________________
07 R1200r :-)
Much fun...

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#610088 - 06/17/10 03:56 PM Re: R1200RT Spark Plugs [Re: hopz]
CoarsegoldKid Offline
Member

Registered: 10/23/06
Posts: 3105
Loc: Coarsegold, Ca, USA
I changed mine the last time when the performance dropped off with about 15K miles on them when it began to misfire. The bike was fine up till that point. Past routine plug changes were at 20K and 18K.
_________________________
Joe
NorCal Meets SoCal in the Middle 2015 is April 24-26.

'05 R1200RT 107K miles, takes me down the highway.
'13 KTM 690 Enduro R takes me through the woods.

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#610099 - 06/17/10 04:27 PM Re: R1200RT Spark Plugs [Re: hopz]
dirtrider Offline
The Oracle
Member

Registered: 06/05/10
Posts: 8309
Loc: Ohio
Hi Hopz

Well the amount of sparks on the spark plug are really the determining factor not really the miles traveled. Miles are the easiest thing for BMW to have a person go by so that is what they do.
The plug gaps start out around .8mm or .031” and the wear limit is about 1mm or .040”.
So as long as your spark plugs are not oil or otherwise fouled don’t look blistered or have severely rounded electrodes and they look in decent shape they technically can go until the electrode gaps get to 1mm or .040”.
Those BMW dual electrode plugs are a unique design electrode so need to be measured using a round or wire type gap gauge so get yourself a number 60 drill bit and when that will just squeeze between the side electrodes and the center electrode replace them.
Not much different than modern cars and some of them will go well over 100K on the original plugs and those usually have single electrode spark plugs.
_________________________
D.R. ___
Sent from my rotory dial wall phone!

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#610303 - 06/18/10 08:43 AM Re: R1200RT Spark Plugs [Re: dirtrider]
swilson Offline
Member

Registered: 04/09/07
Posts: 664
Loc: Morgan Hill, CA
My dealer bent me over to the tune of $20/per plug last time I bought them. Are there cheaper sources?
_________________________
Scott Wilson
R1200RT-P by day (back in the saddle for another 5 yrs)
R1200RT by night

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#610315 - 06/18/10 09:15 AM Re: R1200RT Spark Plugs [Re: swilson]
hopz Offline
Member

Registered: 08/21/05
Posts: 3394
Loc: Colorado Springs, CO
My local independent shop has a NGK Iridium plug which their book says fits the RT... $10 per each. Tempting

Thanks for the input guys. My plugs were the right color when pulled, the gap is holding fine. I carefully clean them with a wire brush and they still seem to have plenty of spark.
_________________________
R1200RT
R1100S

Assumption is the Mother of all screw ups.

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#610341 - 06/18/10 10:33 AM Re: R1200RT Spark Plugs [Re: swilson]
Mike T Offline
Member

Registered: 04/21/03
Posts: 430
Loc: Boulder, CO
Originally Posted By: swilson
My dealer bent me over to the tune of $20/per plug last time I bought them. Are there cheaper sources?


Check here $7.95 each.

http://www.euromotoelectrics.com/SearchR...6&maxprice=
_________________________
Mike T.

'95 R1100RS
'06 R1200RT

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#610356 - 06/18/10 11:20 AM Re: R1200RT Spark Plugs [Re: hopz]
markgoodrich Offline
Member

Registered: 02/04/07
Posts: 3062
Loc: Austin, TX
This plug:
NGK (7415) DCPR8EKP Multi-Ground Spark Plug, Pack of 1

is the one recommended directly from NGK's U. S. tech line for the R1200RT. I've used two sets, at approximately 24k each, and have had no problems. I also don't think they needed replacing at 24k miles. I'm going to run the current set until one of three things occurs: I get tired of the bike and trade; I notice a drop in performance; or, dang, I forgot the third thing.

Not hard to find, Amazon has them and will ship free; if you go to an auto parts store, use the "7415" part number rather than the longer one, if they can't find it under the longer one.
_________________________
2012 K1600GT




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#673161 - 01/31/11 08:38 AM Re: R1200RT Spark Plugs [Re: hopz]
rideaway Offline
Member

Registered: 06/30/07
Posts: 139
Loc: Raymond Alberta
I just paid $25 Canadian for, 4 NGK DCPR8EKC plugs at Discountcarbulbs.com, free shipping included.

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