02-08-2017, 06:28 PM
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#1
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Registered User
Join Date: Jul 2014
Location: Listowel, Ontario, Canada
Posts: 1,120
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Brake Rotors
Hey guys...what do you all think - how long should our rotors (front) last before replacement? I know lots of variables, but generally, what's the consensus?
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2011 Boxster 987.2 Arctic silver / Black leather, PDK with Sports Chrono Package Plus
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02-08-2017, 06:40 PM
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#2
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,797
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A better question is:
How long is a piece of string?
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2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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02-08-2017, 07:00 PM
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#3
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Registered User
Join Date: Jul 2014
Location: Listowel, Ontario, Canada
Posts: 1,120
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Brake pads have been discussed ad nauseam...but not rotors. Why not? Piece of string? Seriously?
Most on here lately seem to daily drive, lots of peeps doing that in the city...what are you all getting for mileage out of rotors?
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2011 Boxster 987.2 Arctic silver / Black leather, PDK with Sports Chrono Package Plus
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02-08-2017, 07:03 PM
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#4
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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I'm with Jay, almost impossible to answer.
But if we want to talk in the most general terms, I'd suggest that most street drivers should expect the rotors to last two sets of pads.
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1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
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02-08-2017, 07:24 PM
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#5
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,797
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They need to be replaced when they have worn down to the min thickness. No way to know when that will be
Its like asking how long is a piece of string, sorry
And when you need to replace them a great deal on high quality rotors in on ebay. Look for Meyle rotors at around $75-$80 a PAIR!
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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02-08-2017, 08:38 PM
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#6
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Registered User
Join Date: Jun 2014
Location: LB, Germany
Posts: 1,512
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Quote:
Originally Posted by Giller
Hey guys...what do you all think - how long should our rotors (front) last before replacement? I know lots of variables, but generally, what's the consensus?
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If they are OK and don't have cracks or something else why don't you measure the thickness? Then you know if they should be replaced.
Regards, Markus
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My Porsche keyfob, instrument cluster and alarm ecu repair service: https://sportwagendoktor.de
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02-09-2017, 04:56 AM
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#7
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Registered User
Join Date: Dec 2012
Location: FL
Posts: 4,144
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A quick way to check is to see if there is a rotor lip at the top. A 1mm lip on the side you can see probably means 1mm on the back side, that is 2mm of wear which is the wear limit for the 986 rotors.
The first time I checked mine way back they were waaaay past that, I think almost 4mm of wear. They still looked good and I had even done my first track day with them (and I was pretty aggravated at the shop that I paid to do the pre-track inspection for not catching that)
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02-09-2017, 07:22 AM
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#8
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Registered User
Join Date: Jan 2017
Posts: 99
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Quote:
Originally Posted by steved0x
A quick way to check is to see if there is a rotor lip at the top. A 1mm lip on the side you can see probably means 1mm on the back side, that is 2mm of wear which is the wear limit for the 986 rotors.
The first time I checked mine way back they were waaaay past that, I think almost 4mm of wear. They still looked good and I had even done my first track day with them (and I was pretty aggravated at the shop that I paid to do the pre-track inspection for not catching that)
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This is the real method to check. Usually done with micrometer. Calipers will measure the lip by mistake. Or if you have any visible cracks, they are done.
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2001 Boxster S (SOLD)
1991 Nissan Silvia "K"(Forgotten somewhere in Canada)
1989 240sx (Track car)
1987 325IS (Soon to be Spec E30 racecar)
2001 GSXR-600 (Almost warm outside!)
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02-09-2017, 10:09 AM
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#9
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Registered User
Join Date: Jan 2014
Location: New Jersey
Posts: 1,631
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My original front pads and rotors lasted for over 60,000 miles on my '03 S. That was mostly highway driving and my first HPDE at the end of the pads. The rotors had no cracks, but they did have a slight lip which I eyeballed at around 1 mm. So rather than measure them, I just replaced them. I think how long pads and rotors last is very dependent on how and where you drive.
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