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How many miles do you get on a serpentine belt? #4464454
07/19/17 10:54 PM
07/19/17 10:54 PM
Joined: Nov 2010
Posts: 2,845
California
Errtt Offline OP
Errtt  Offline OP

Joined: Nov 2010
Posts: 2,845
California
I do general checks during oil changes to include a little look at the serpentine belt etc. But I just got a good look using a flashlight and the belt looks real good (ribbed side, back side, and the edges). No evidence of slight cracking or anything. Vehicle is 2010 Hyundai 2.4L with 130k+ on the clock. I'm actually surprised how good it looks. Last time I got a real good look at it was around 95k. Before that around 60k. Its still the OEM. Never a squeak or anything.
And while I was checking it out, I had someone else with me look and he says it must have been recently replaced, but it hasn't. I've never ran a belt this long. Clean looking especially for the time/miles.

I recently received a new belt thinking next oil change I'll change it, but now 2nd thoughts.
I have the new belt tossed in the cargo area along with a 17mm combination wrench (size on the spring loaded tensioner pulley).
I bought a Bando belt. 1st time as I have always gone for Gates, then Dayco. The Bando was cheap on Amazon, and no I don't know why I bought the Bando as that's generally not me, but I done did it.

I run the OEM belt until it looks more deteriorated and hold the Bando in cargo. Never know on the road.

The other vehicles I replaced them around 60k and although they didn't look bad at all, I did it anyways, kept the OEMs as spares.

Just curious what folks are getting on serpentine belts nowadays.

Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464461
07/19/17 11:05 PM
07/19/17 11:05 PM
Joined: Oct 2004
Posts: 3,279
Midwest, Illinois
beanoil Offline
beanoil  Offline

Joined: Oct 2004
Posts: 3,279
Midwest, Illinois
I had the serps done on my 2003 F350 at 14 years and 119k.
The mechanic asked me why I was wasting money. ( my reply was "It's a 6.0, I'm used to it...)
2012 Chrysler T&C, 91,000. Still all original, looks good.

The Gates site has some straight forward info on belts and wear if you want to look.
http://www.gates.com/products/automotive/tools-and-sales-aids/belt-wear-diagnosis
Get your free tool from the link, and you'll know when it's got to go.

Last edited by beanoil; 07/19/17 11:06 PM.

beanoil: Tough under heat, real dirty afterwards.
Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464465
07/19/17 11:08 PM
07/19/17 11:08 PM
Joined: Jun 2009
Posts: 3,820
Chicago, IL
tomcat27 Offline
tomcat27  Offline

Joined: Jun 2009
Posts: 3,820
Chicago, IL
it sounds to be in good shape. the spec for replacement actually includes X number of cracks per inch. the last I replaced on my Ram was 15 years old. at that point the tensioner was worn out also. (almost no tension) serp failure seems to be very rare


2019 Cherokee, 2018 Jetta, 2014 Sentra, 1995 Escort, 1970 Cougar, 2013 XT250, 2010 Vstar, 2014 CTX1300
Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464466
07/19/17 11:09 PM
07/19/17 11:09 PM
Joined: Nov 2010
Posts: 2,845
California
Errtt Offline OP
Errtt  Offline OP

Joined: Nov 2010
Posts: 2,845
California
^ Thanks... checking it out.

Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464467
07/19/17 11:09 PM
07/19/17 11:09 PM
Joined: Jul 2016
Posts: 682
il usa
merconvvv Offline
merconvvv  Offline

Joined: Jul 2016
Posts: 682
il usa
As the belt wears off slowly can it effect the charging by the alternator and other stuff ?


1988 Mazda RX7 na PP 10w30 Noack 4.7
1994 Chrysler Concorde 3.3
1999 Ford Expedition 4.6 QSUD 10W30 NOACK 5.0
Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464473
07/19/17 11:21 PM
07/19/17 11:21 PM
Joined: Mar 2012
Posts: 1,456
San Antonio, TX
E150GT Offline
E150GT  Offline

Joined: Mar 2012
Posts: 1,456
San Antonio, TX
I have a motocraft belt on my f150 that I'm pretty sure is the original. Knowing the guy who bought it new and my dad who bought it at 30k it's gotta be the original. 22 years and 245k miles and still looks good.

Last edited by E150GT; 07/19/17 11:22 PM.

1984 Mercedes-Benz 300SD - 100k
1995 F150 XL 4.9 reg cab 5MT - 251k 5w30
2016 Mazda6 Touring 6MT - 57k 10w30
2006 Buick Lucerne CXL 3.8 31k 5w30
Re: How many miles do you get on a serpentine belt? [Re: tomcat27] #4464478
07/19/17 11:32 PM
07/19/17 11:32 PM
Joined: Jun 2003
Posts: 18,419
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline

Joined: Jun 2003
Posts: 18,419
Deplorable in apple valley, ca
Originally Posted By: tomcat27
it sounds to be in good shape. the spec for replacement actually includes X number of cracks per inch. the last I replaced on my Ram was 15 years old. at that point the tensioner was worn out also. (almost no tension) serp failure seems to be very rare
new belts dont crack like in the past the grooves do wear out and there is a tool to test for that. Gates says check them @60k and replace @90k. Mine never last that long. 40k or so except for the cheapy I bought @azone that lasted 9 months.


02 Wrangler carlube 5w30
87 F250 traveler 15w40
07 fjcruiser Chevron 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464482
07/19/17 11:39 PM
07/19/17 11:39 PM
Joined: Mar 2015
Posts: 5,877
Virginia
bbhero Offline
bbhero  Offline

Joined: Mar 2015
Posts: 5,877
Virginia
Mine lasted 150k miles. I bought a OEM serpentine belt and replaced it. Pretty good in my book.


Nissan Altima 3.5 Coupe
Mobil Super 5w30 Wix 57356
"Treat your family like your friends and treat your friends like your family."
Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464491
07/20/17 12:00 AM
07/20/17 12:00 AM
Joined: Apr 2016
Posts: 815
Specific Ocean
Kibitoshin Online content
Kibitoshin  Online Content

Joined: Apr 2016
Posts: 815
Specific Ocean
Last two vehicles I've serviced that still had the original belt:

00 Toyota Tundra V6. 5VZ-FE that uses 3 4-rib belts lasted 125,000mi. Alt belt was showing seperation while the A/C and P/S belts looked good.
Same as above w/ v8. 2UZ-FE 6 rib auto tensioner at 160,000mi. Belt squeal when cold, belt looked good. Replaced tensioner and belt.

"Looked good" as in no cracks but modern belts don't crack anymore. Only way to check if belt is still good is to use a gauge.

Last edited by Kibitoshin; 07/20/17 12:00 AM.

Shin Gekiretsu Shin'ou'hou
01 Toyota Tundra 2WD V8 4.7L
02 Chevy Silverado C1500 V8 5.3L
Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464502
07/20/17 12:50 AM
07/20/17 12:50 AM
Joined: Sep 2014
Posts: 2,206
US-WA
Dyusik Online content
Dyusik  Online Content

Joined: Sep 2014
Posts: 2,206
US-WA
Every serpentine belt that gave up on me was 170k<190k.


95 Cherokee 190K DELO 10W30, XG8
07 IS250 106K STP syn HM 10w30, FULL
04 YZF-R1 19K DELO 15w40, XG7317
99 HD XL1200S 21K VR1 20w50, NG1515
14 RX450h 40k Idemitsu 0w20, 57047
Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464543
07/20/17 04:57 AM
07/20/17 04:57 AM
Joined: Oct 2008
Posts: 19,330
Sunny Florida
SteveSRT8 Offline
SteveSRT8  Offline

Joined: Oct 2008
Posts: 19,330
Sunny Florida
Never had one break on any car or truck owned. Routinely replace tensioners, idlers and belt at 150k miles or so.


"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix
Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464553
07/20/17 05:20 AM
07/20/17 05:20 AM
Joined: Feb 2012
Posts: 838
One Step Beyond
larryinnewyork Offline
larryinnewyork  Offline

Joined: Feb 2012
Posts: 838
One Step Beyond
If your going to loose sleep not knowing when to change, and that's understandable.

1) Put your 'new' belt ON
2) Keep the 'old' belt in your vehicle for emergencies.
A lot of people do this along with a Wrench for the Tensioner.

Now your good for another 7 years 130,000 miles

I once took my vehicle in for an 'oil' undercoating.
The employee said "when I started your truck, the drive-belt broke"
I said, "there's a spare behind the drivers seat".

Last edited by larryinnewyork; 07/20/17 05:24 AM.
Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464604
07/20/17 07:05 AM
07/20/17 07:05 AM
Joined: Sep 2016
Posts: 1,418
Minnesota
bioburner Offline
bioburner  Offline

Joined: Sep 2016
Posts: 1,418
Minnesota
Still have the original on the 97 Ford 1 ton. It gets checked regularly and even has been derailed by a wood chuck that thought the engine bay would be a good place to hide. Removing ground chuck is not a pleasant project. At least it happened with a cold engine.

As to merconvvv question about wear affecting power output of the alternator, very little, as the belt is very thin and the regulator can vary the output. With the use of tensioners the belt system stays pretty much the same tension all of its life and the way that the belt is now routed around pulleys a lot more than the old belts that sometimes only got a 25% contact vs now getting more than 50%



97 Ford E350 D,99 F350 dually D
13 Scion Xb
12 Ford Transit Connect
06 Nissan Xterra
03 K1200 BMW
07 Kawasaki KLR650
13 Madass
Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464619
07/20/17 07:31 AM
07/20/17 07:31 AM
Joined: Nov 2003
Posts: 1,336
Middle of Iowa
DriveHard Offline
DriveHard  Offline

Joined: Nov 2003
Posts: 1,336
Middle of Iowa
The belt on my truck still looks brand new with 103K on it. Not a crack can be found.


Smile, it increases your face value
2013 Fiat 500 Abarth mod heavy (my DD)
2018 Alfa Romeo Stelvio TI Sport (wife's)
2011 Silverado Crew Cab LT 6.2L/6spd (tow pig)
2007 Nissan Xterra (trail toy)
Re: How many miles do you get on a serpentine belt? [Re: Errtt] #4464628
07/20/17 07:48 AM
07/20/17 07:48 AM
Joined: Dec 2016
Posts: 279
Sav ga
NStuart Offline
NStuart  Offline

Joined: Dec 2016
Posts: 279
Sav ga
There was a 50-page thread on cumminsforum I believe, I think it was called the little hot shot or something like that it was a great read. It chronicled every single repair done to this truck over about three hundred thirty thousand miles truck still had original serpentine belt


Detroit14l 1m75k mi bp schaffer9k 30k oil
96 ram 5.9 gas 80k built tranny 5k m1
85 cj7 4.2 performance build. Schaeffer 9000
08 cbr600rr graffiti. T6
08 husky sm610 t6
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