How many miles does a serpentine belt last?

Hawkeye · 08-08-2018, 08:36 PM

About 96,000 miles...

mmm-five · 08-09-2018, 02:36 AM

I don’t recall ever changing mine (in 160,000 miles), but my spanner monkey is quite proactive so may have changed it during one it’s annual services.

Hawkeye · 08-09-2018, 08:05 AM

Yeah, I need a good maintenance guy like that, I had someone I liked in the last city I lived in but don't know of any good indy shops here. Probably just get racked over the coals by the dealership... at least the one here seems to do good work and is capable.

rsutoratosu · 08-09-2018, 09:37 AM

speaking of belts, how many on the n52? whats the part of the one that broke there ? BMW 11287628651 ?

Hawkeye · 08-09-2018, 10:01 AM

Quote:

Originally Posted by rsutoratosu

speaking of belts, how many on the n52? whats the part of the one that broke there ? BMW 11287628651 ?

I am not sure off hand, I can tell you when I get the replacement part # today or tomorrow.

gpraceman · 08-09-2018, 10:47 AM

https://www.realoem.com/ to easily look up part#'s.

The HACK · 08-10-2018, 09:49 AM

IMO, the belts "time" out as well as drive distance. Mine were shot at 45,000 miles (roughly 10 years). They become brittle over time. My mechanic pointed it out to me during a routine visit (coolant flush) that the edges are starting to fray and I changed them out proactively.

Hawkeye · 08-10-2018, 01:00 PM

Quote:

Originally Posted by The HACK

IMO, the belts "time" out as well as drive distance. Mine were shot at 45,000 miles (roughly 10 years). They become brittle over time. My mechanic pointed it out to me during a routine visit (coolant flush) that the edges are starting to fray and I changed them out proactively.

That is good to know. I am a little over 11 years of ownership but that had never been pointed out to me as an area of concern (and the dealership points EVERYTHING out).

KevinM · 08-10-2018, 02:44 PM

Quote:

Originally Posted by The HACK

IMO, the belts "time" out as well as drive distance. Mine were shot at 45,000 miles (roughly 10 years). They become brittle over time. My mechanic pointed it out to me during a routine visit (coolant flush) that the edges are starting to fray and I changed them out proactively.

Just replaced mine at 35K miles, same reason. Noted micro-cracks during an oil change.

Mtxzptlk · 08-14-2018, 09:11 PM

Quote:

Originally Posted by KevinM

Just replaced mine at 35K miles, same reason. Noted micro-cracks during an oil change.

^ This. Same deal here 25.4K mi.

Both belts had cracks. Upgraded to Power pulley kit from TMS with size appropriate belts.

SD ///M4 · 08-14-2018, 09:35 PM

During a "free multi-point inspection" at a local BMW dealer earlier this year, they pointed out that the serpentine belt has small cracks all around it. They also pointed out that the upper hose is bulging where it attaches to the radiator and water pump and recommended that I also have the lower hose replaced as well. 2006 Z4 M Roadster with about 58k miles on it.

I finally got around to ordering the parts and I'm considering doing the serpentine belt myself. The hoses I'm probably going to have replaced by my mechanic so I don't have to deal with the coolant.

Hawkeye · 08-15-2018, 08:02 AM

If I had the time right now I would have done it myself as well. I ended up paying ~200 for parts and labor for the serpentine, which was not astronomical at least.

(Please don't tell me how little the part costs and how easy it is... ignorance is bliss for now

)

gpraceman · 08-15-2018, 11:41 AM

Quote:

Originally Posted by Hawkeye

If I had the time right now I would have done it myself as well. I ended up paying ~200 for parts and labor for the serpentine, which was not astronomical at least.

(Please don't tell me how little the part costs and how easy it is... ignorance is bliss for now

)

At least they were not also trying to get you to pay up for replacing the tensioner pulley. I got a quote for $526 from the dealership to replace the A/C belt and tensioner pulley. But, I won't tell you how inexpensive or easy it was to just DIY it.

The tensioner pulley did not even need to be replaced.

Hawkeye · 08-15-2018, 12:24 PM

Thankfully the BMW dealership in Des Moines has proven to be very professional. They mentioned beforehand that the tensioner may need replaced but said once they got in and looked, it was fine. They have done a pretty bang up job on the maintenance items I have had them perform for decent (for a dealership) prices.

08-08-2018, 08:36 PM	#1
Hawkeye Brigadier General 2070 Rep 4,365 Posts Drives: '07 Z4 Coupe, '21 X3, '16 GMC Join Date: Aug 2007 Location: Iowa iTrader: (0) Garage List 2016 GMC Sierra SLT [10.00] 2008 Yamaha R6 [9.00]	How many miles does a serpentine belt last? About 96,000 miles... Attached Images __________________ 2007 Z4 3.0si Coupe • 6 MT • Black Saphire Metallic • PP • SP 2016 GMC Sierra SLT Z71 Premium Plus 4x4 2017 Harley StreetGlide • Denim Black • V&H Tune 2021 BMW x30i • Phytonic Blue Metallic • Fully loaded
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08-09-2018, 02:36 AM	#2
mmm-five First Lieutenant 222 Rep 375 Posts Drives: 2006 Z4MC + 2015 320D M-Sport Join Date: Aug 2017 Location: Liverpool, UK iTrader: (0)	I don’t recall ever changing mine (in 160,000 miles), but my spanner monkey is quite proactive so may have changed it during one it’s annual services.
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08-09-2018, 08:05 AM	#3
Hawkeye Brigadier General 2070 Rep 4,365 Posts Drives: '07 Z4 Coupe, '21 X3, '16 GMC Join Date: Aug 2007 Location: Iowa iTrader: (0) Garage List 2016 GMC Sierra SLT [10.00] 2008 Yamaha R6 [9.00]	Yeah, I need a good maintenance guy like that, I had someone I liked in the last city I lived in but don't know of any good indy shops here. Probably just get racked over the coals by the dealership... at least the one here seems to do good work and is capable. __________________ 2007 Z4 3.0si Coupe • 6 MT • Black Saphire Metallic • PP • SP 2016 GMC Sierra SLT Z71 Premium Plus 4x4 2017 Harley StreetGlide • Denim Black • V&H Tune 2021 BMW x30i • Phytonic Blue Metallic • Fully loaded
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08-09-2018, 09:37 AM	#4
rsutoratosu Captain 114 Rep 779 Posts Drives: Z4 3.0i Join Date: Mar 2011 Location: Chicago, IL iTrader: (0)	speaking of belts, how many on the n52? whats the part of the one that broke there ? BMW 11287628651 ? __________________ -Roranji
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08-09-2018, 10:47 AM	#6
gpraceman Second Lieutenant 56 Rep 202 Posts Drives: '06 Z4 ///M Roadster Join Date: Mar 2017 Location: Highlands Ranch, CO iTrader: (0)	https://www.realoem.com/ to easily look up part#'s. __________________ 2006 Z4 ///M, Interlagos Blue/Beige
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08-10-2018, 09:49 AM	#7
The HACK Midlife Crises Racing Silent but Deadly Class 1821 Rep 5,337 Posts Drives: 2006 MZ4C, 2021 Tesla Model 3 Join Date: Oct 2007 Location: Welcome to Jamaica have a nice day iTrader: (1)	IMO, the belts "time" out as well as drive distance. Mine were shot at 45,000 miles (roughly 10 years). They become brittle over time. My mechanic pointed it out to me during a routine visit (coolant flush) that the edges are starting to fray and I changed them out proactively. __________________ Sitting on a beat-up office chair in front of a 5 year old computer in a basement floor, sipping on stale coffee watching a bunch of meaningless numbers scrolling aimlessly on a dimly lit 19” monitor.
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08-14-2018, 09:35 PM	#11
SD ///M4 ///Multiple 2992 Rep 4,243 Posts Drives: M4 Coupe \| M3 \| Z4M Roadster Join Date: Jan 2011 Location: San Diego, CA iTrader: (1) Garage List 2006 BMW Z4 M Roadster [8.81] 2016 BMW M4 Coupe ( ... [10.00] 2018 BMW M3 (Euro D ... [0.00] 2011 BMW 335is Coup ... [10.00]	During a "free multi-point inspection" at a local BMW dealer earlier this year, they pointed out that the serpentine belt has small cracks all around it. They also pointed out that the upper hose is bulging where it attaches to the radiator and water pump and recommended that I also have the lower hose replaced as well. 2006 Z4 M Roadster with about 58k miles on it. I finally got around to ordering the parts and I'm considering doing the serpentine belt myself. The hoses I'm probably going to have replaced by my mechanic so I don't have to deal with the coolant. __________________ The Coupe: 2016 M4 \| Sakhir Orange \| Black Full Merino Leather \| CF Trim \| M-DCT \| More \| ED 5/13/16 The Sedan: 2018 M3 \| San Marino Blue \| Black Full Merino Leather \| CF Trim \| M-DCT \| ZCP \| ED 7/18/18 The Roadster: 2006 Z4 \| Interlagos Blue \| Black Extended Nappa Leather \| Carbon Leather Trim \| Purchased 7/19/12
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08-15-2018, 08:02 AM	#12
Hawkeye Brigadier General 2070 Rep 4,365 Posts Drives: '07 Z4 Coupe, '21 X3, '16 GMC Join Date: Aug 2007 Location: Iowa iTrader: (0) Garage List 2016 GMC Sierra SLT [10.00] 2008 Yamaha R6 [9.00]	If I had the time right now I would have done it myself as well. I ended up paying ~200 for parts and labor for the serpentine, which was not astronomical at least. (Please don't tell me how little the part costs and how easy it is... ignorance is bliss for now ) __________________ 2007 Z4 3.0si Coupe • 6 MT • Black Saphire Metallic • PP • SP 2016 GMC Sierra SLT Z71 Premium Plus 4x4 2017 Harley StreetGlide • Denim Black • V&H Tune 2021 BMW x30i • Phytonic Blue Metallic • Fully loaded
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08-15-2018, 12:24 PM	#14
Hawkeye Brigadier General 2070 Rep 4,365 Posts Drives: '07 Z4 Coupe, '21 X3, '16 GMC Join Date: Aug 2007 Location: Iowa iTrader: (0) Garage List 2016 GMC Sierra SLT [10.00] 2008 Yamaha R6 [9.00]	Thankfully the BMW dealership in Des Moines has proven to be very professional. They mentioned beforehand that the tensioner may need replaced but said once they got in and looked, it was fine. They have done a pretty bang up job on the maintenance items I have had them perform for decent (for a dealership) prices. __________________ 2007 Z4 3.0si Coupe • 6 MT • Black Saphire Metallic • PP • SP 2016 GMC Sierra SLT Z71 Premium Plus 4x4 2017 Harley StreetGlide • Denim Black • V&H Tune 2021 BMW x30i • Phytonic Blue Metallic • Fully loaded
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