Rear Brakes Wear Faster Than Front?

Discussion forum for the Infiniti JX35 / Infiniti QX60 - This 7-seat premium crossover dominates the class.
GSPKurt
Posts: 7
Joined: Sat Sep 01, 2018 2:02 pm
Car: 2013 Infiniti JX35

Rear Brakes Wear Faster Than Front?

Postby GSPKurt » Sun Sep 16, 2018 7:03 am

Just bought a '13 JX35, only 30k miles. The rear pads are worn noticeably more that the front. Have any of you had this happen? Is it common with this vehicle?


AlabamaDan
Posts: 1749
Joined: Fri Aug 02, 2002 12:37 pm
Car: 15-Q70 98-QX4

Re: Rear Brakes Wear Faster Than Front?

Postby AlabamaDan » Sun Sep 16, 2018 7:53 am

I would've thought it was the other was around.

GSPKurt
Posts: 7
Joined: Sat Sep 01, 2018 2:02 pm
Car: 2013 Infiniti JX35

Re: Rear Brakes Wear Faster Than Front?

Postby GSPKurt » Sun Sep 16, 2018 8:34 am

AlabamaDan wrote:
Sun Sep 16, 2018 7:53 am
I would've thought it was the other was around.
I agree!

mnummy
Posts: 8
Joined: Fri Jun 17, 2016 7:37 am
Car: JX35

Re: Rear Brakes Wear Faster Than Front?

Postby mnummy » Mon Sep 17, 2018 8:19 am

Just FYI here. I bought a 2011 Cadillac Escalade in 2015 that had 29k on it. 2 months in I took it to a shop to have the tires rotated and balanced. The guy tells me that it needs rear brakes. I had owned 2 other Yukon XLs (same drive train) that I put over 200k miles on. I knew there was no way this car needed brakes at 29k. So he takes me and shows me and sure enough the brakes were almost completely worn out. This made me suspicious of the mileage so I checked with my local dealer to find the latest service records on it. Turns out the last time the car was serviced at a GM dealer was in 2014 and it had over 107k miles on it. I say this to say, I would not expect the rear brakes on your vehicle to be worn out at 30k. I replaced mine on my JX35; front at 50k and rear at 90k. So you might want to verify that that is the actual miles. FYI carfax is not the way to do that ;-)

GSPKurt
Posts: 7
Joined: Sat Sep 01, 2018 2:02 pm
Car: 2013 Infiniti JX35

Re: Rear Brakes Wear Faster Than Front?

Postby GSPKurt » Mon Sep 17, 2018 8:21 am

mnummy wrote:
Mon Sep 17, 2018 8:19 am
Just FYI here. I bought a 2011 Cadillac Escalade in 2015 that had 29k on it. 2 months in I took it to a shop to have the tires rotated and balanced. The guy tells me that it needs rear brakes. I had owned 2 other Yukon XLs (same drive train) that I put over 200k miles on. I knew there was no way this car needed brakes at 29k. So he takes me and shows me and sure enough the brakes were almost completely worn out. This made me suspicious of the mileage so I checked with my local dealer to find the latest service records on it. Turns out the last time the car was serviced at a GM dealer was in 2014 and it had over 107k miles on it. I say this to say, I would not expect the rear brakes on your vehicle to be worn out at 30k. I replaced mine on my JX35; front at 50k and rear at 90k. So you might want to verify that that is the actual miles. FYI carfax is not the way to do that ;-)
That is a valid concern, however, the seller is a friend of the family who's husband passed. We are familiar with the vehicle.

Luckynjun
Posts: 2
Joined: Fri Feb 10, 2017 5:52 pm
Car: 2014 Q50 AWD Touring, technology, driver assist packages
2015 QX60 AWD Touring, technology, driver assist packages
Location: Central coast, California

Re: Rear Brakes Wear Faster Than Front?

Postby Luckynjun » Sat Nov 17, 2018 9:40 pm

I was just at my Infiniti dealer to have my service guy inspect my 2015 QX60 AWD I just bought. The subject came up about why the rear rotors appeared to only be worn on about 2/3 of the width. Service guy said the rear pads are smaller than the front, do not use the full width of the rotor, and wear out more quickly. WTF? I replied. No reason, just how it is. He showed me a QX80 in the service bay that looked the same. I saw on the service record for my car that the rotors had already been turned by the original owner. So, known issue with no answer.

User avatar
AZhitman
Administrator
Posts: 69474
Joined: Mon Apr 29, 2002 2:04 am
Car: 72 240Z RB25, 63 Bluebird RHD, 63 NL320, 67 WRL411, 67 SPL311, 68 510 SR, 73 240Z, 77 620 SR20, 89 Pao, 98 S14, 12 Titan CC 4x4.
Location: Surprise, Arizona
Contact:

Re: Rear Brakes Wear Faster Than Front?

Postby AZhitman » Sat Nov 17, 2018 9:56 pm

Hold up - Why are we assuming that just because the rears are worn more than the fronts, that they've been on the car the same mileage?

My guess, and I'm sure others will back me up, is front pads get replaced about 2x as often as rears.

So, it's likely the car had the fronts replaced a while back, and the rears still had quite a bit of life left.

GSPKurt
Posts: 7
Joined: Sat Sep 01, 2018 2:02 pm
Car: 2013 Infiniti JX35

Re: Rear Brakes Wear Faster Than Front?

Postby GSPKurt » Sun Nov 18, 2018 7:28 pm

There's only 30k miles on it, we know the original owner (friends for 20+ years), and know the fronts have never been replaced.

User avatar
AZhitman
Administrator
Posts: 69474
Joined: Mon Apr 29, 2002 2:04 am
Car: 72 240Z RB25, 63 Bluebird RHD, 63 NL320, 67 WRL411, 67 SPL311, 68 510 SR, 73 240Z, 77 620 SR20, 89 Pao, 98 S14, 12 Titan CC 4x4.
Location: Surprise, Arizona
Contact:

Re: Rear Brakes Wear Faster Than Front?

Postby AZhitman » Tue Nov 20, 2018 10:02 pm

Are you certain the rear pads are the same thickness as the fronts when new?

Also, if it's not acting up, and if there's no discoloration on the rotors (purple / brown) that would indicate overheating from drag, then I'd say don't sweat it. Drive it and enjoy it - The JX is a great car!

With that few miles, and a car that's almost 7 years old, my concern would be that the calipers STILL require servicing - lubrication of the shims, sliders, etc. Pad wear is certainly an indicator of remaining brake life, but it's not the determining factor.


Return to “Infiniti JX35 / QX60 Forum”