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Replace rotors but not pads? #4674581
02/22/18 03:06 PM
02/22/18 03:06 PM
Joined: Apr 2017
Posts: 173
PA
Chester11 Offline OP
Chester11  Offline OP
Joined: Apr 2017
Posts: 173
PA
Hi folks:

I'm coming up on a state inspection. My rotors are below spec, but the pads a relatively new.

Can I replace just the rotors but not the pads?

Thanks!

Apologies - wrong forum, if a Mod can move, I would appreciate....

Last edited by Chester11; 02/22/18 03:17 PM. Reason: oops
Re: Replace rotors but not pads? [Re: Chester11] #4674588
02/22/18 03:17 PM
02/22/18 03:17 PM
Joined: May 2016
Posts: 725
Canada
i_hate_autofraud Offline
i_hate_autofraud  Offline
Joined: May 2016
Posts: 725
Canada
The cheapo in me says if the new pads are riding on old rotors without heavy grooves, then
the pads should 'bed' OK on new rotors. If you drive it gently and give the pads a chance
to mate with new rotors, no one should notice. If the brakes start pulling to one side or
the other, then you may have spring for new pads too.

Re: Replace rotors but not pads? [Re: Chester11] #4674594
02/22/18 03:24 PM
02/22/18 03:24 PM
Joined: Aug 2010
Posts: 12,913
Northern Kentucky
901Memphis Offline
901Memphis  Offline
Joined: Aug 2010
Posts: 12,913
Northern Kentucky
Yes it's doable


2012 Chevy Cruze LT 1.4T - 59k - Edge 0w30 SL + Mahle OX401D
2002 Buick Century 144k - Built 4T65e(Maxlife) - GTX 5w30 + Fram XG3980
Re: Replace rotors but not pads? [Re: Chester11] #4674595
02/22/18 03:25 PM
02/22/18 03:25 PM
Joined: Nov 2013
Posts: 1,968
Chicago, IL
EdwardC Offline
EdwardC  Offline
Joined: Nov 2013
Posts: 1,968
Chicago, IL
I've done it. I had very low mileage pads on when the internal parking brake parts were making noises, so I replaced the rotors but kept the pads. I did use some coarse sand paper to flatten away any rotational marks and let the pads start fresh.

Re: Replace rotors but not pads? [Re: Chester11] #4674608
02/22/18 03:44 PM
02/22/18 03:44 PM
Joined: Jan 2017
Posts: 207
Michigan
64bawagon Offline
64bawagon  Offline
Joined: Jan 2017
Posts: 207
Michigan
I have done it on a few trucks due to rotor rot. I always square the pads up by cleaning them on flat concrete. It removes the glaze on them and allows them to bed well on the new rotors. You could also do the same thing on a sheet of 80 grit sandpaper.


64 Chevy wagon, 10 Jeep Wrangler, 18 Silverado 1/2 ton
Re: Replace rotors but not pads? [Re: i_hate_autofraud] #4674610
02/22/18 03:46 PM
02/22/18 03:46 PM
Joined: Oct 2005
Posts: 11,501
PA
d00df00d Offline
d00df00d  Offline
Joined: Oct 2005
Posts: 11,501
PA
Originally Posted By: i_hate_autofraud
if the new pads are riding on old rotors without heavy grooves, then
the pads should 'bed' OK on new rotors.

^ My understanding as well.


2008 BMW M3
Re: Replace rotors but not pads? [Re: Chester11] #4674613
02/22/18 03:57 PM
02/22/18 03:57 PM
Joined: Dec 2006
Posts: 8,188
Canuck living in California
KrisZ Offline
KrisZ  Offline
Joined: Dec 2006
Posts: 8,188
Canuck living in California
Been there and done that. It may or may not work long term. There is a good chance you will need to do this job again in a year or so.


2015 Dodge Grand Caravan-30k miles.
2007 Ford Focus ZX3-110k miles
2006 Mazda 3-168k miles
Re: Replace rotors but not pads? [Re: Chester11] #4674619
02/22/18 04:02 PM
02/22/18 04:02 PM
Joined: Apr 2012
Posts: 5,771
MA
Wolf359 Online content
Wolf359  Online Content
Joined: Apr 2012
Posts: 5,771
MA
I used to just get lifetime pads. So anytime I change the rotors I put in new pads. Does your state actually check the thickness of the rotors? Around here a full inspection is supposed to take 45 minutes but the inspectors blow through them in 5 minutes.

Re: Replace rotors but not pads? [Re: Chester11] #4674628
02/22/18 04:23 PM
02/22/18 04:23 PM
Joined: Oct 2010
Posts: 7,137
Michigan
A_Harman Offline
A_Harman  Offline
Joined: Oct 2010
Posts: 7,137
Michigan
If the pads are eating the rotors, they are probably embedded with iron particles, and will eat the new rotors, too.
I've been through this on my Camaro. Change the pads when you change the rotors.


1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck
Re: Replace rotors but not pads? [Re: Chester11] #4674683
02/22/18 05:38 PM
02/22/18 05:38 PM
Joined: Nov 2006
Posts: 20,765
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,765
MA, Mittelfranken.de
I would say it has a lot to do with the pads, pads that have a lot of bite eg semi metallic will try to grind the rotors to them, soft pads will probably wear to the new rotor although in any case expect reduced performance at least initially.
Generally new rotors, new pads.


ASE L1, Master. Deutsch Meisterbrief.
Re: Replace rotors but not pads? [Re: Chester11] #4674686
02/22/18 05:41 PM
02/22/18 05:41 PM
Joined: Dec 2011
Posts: 5,286
North Carolina
rooflessVW Online content
rooflessVW  Online Content
Joined: Dec 2011
Posts: 5,286
North Carolina
Yep no problem. Just had a set of rotors put on the Volvo at 20k miles.


"Zed's dead baby, Zed's dead."
Re: Replace rotors but not pads? [Re: Chester11] #4674737
02/22/18 06:47 PM
02/22/18 06:47 PM
Joined: Mar 2008
Posts: 7,517
USA
slacktide_bitog Online content
slacktide_bitog  Online Content
Joined: Mar 2008
Posts: 7,517
USA
You can, but it seems pointless.

Also, make sure you get coated rotors, so they won't rust overnight. Centric Premium, Wagner E-coated, or EBC Plain rotors are the best smile

Re: Replace rotors but not pads? [Re: Chester11] #4674757
02/22/18 07:12 PM
02/22/18 07:12 PM
Joined: Sep 2002
Posts: 2,428
VA
Gebo Offline
Gebo  Offline
Joined: Sep 2002
Posts: 2,428
VA
New rotors = New pads. OEM rotor and pads for me.


'98 LEX LS400 280K
'02 4Runner 225K
'05 Lex LS430 85K
'06 Toyota Highlander 145K
'09 Lex IS350 85K
'07 Lex GX470 60K
Amsoil in all engines, transmissions and differentials

Re: Replace rotors but not pads? [Re: slacktide_bitog] #4674879
02/22/18 09:38 PM
02/22/18 09:38 PM
Joined: Feb 2009
Posts: 17,358
Michigan
daves87rs Offline
daves87rs  Offline
Joined: Feb 2009
Posts: 17,358
Michigan
Originally Posted By: slacktide_bitog
You can, but it seems pointless.

Also, make sure you get coated rotors, so they won't rust overnight. Centric Premium, Wagner E-coated, or EBC Plain rotors are the best smile


Those help a bunch too...


2019 Chevrolet Equinox LS
2006 Chevrolet Cobalt LS
Re: Replace rotors but not pads? [Re: Chester11] #4674900
02/22/18 10:01 PM
02/22/18 10:01 PM
Joined: Apr 2010
Posts: 442
Suburban Washington DC
atikovi Offline
atikovi  Offline
Joined: Apr 2010
Posts: 442
Suburban Washington DC
Depending on application, you can find $10 or $15 rotors and pads under $10. No reason to replace the pads if they have plenty of life left.

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