Results 1 to 6 of 6

Thread: '16 CX-5 possible rear brake drag causing tires to wear?

  1. #1
    Registered Member

    2016 Mazda CX-5 Sport

    Join Date
    Oct 2018
    Location
    FL
    Posts
    13

    '16 CX-5 possible rear brake drag causing tires to wear?

    I have a 16 CX-5 sport with around 40,200 miles and the original Geolander tires. I got the rear brakes replaced last year in July by my mechanic. Initially he didn't understand the Electronic Parking Brake. So, at that time I felt a bit of a drag when I drove the vehicle after the brake pads were replaced.

    I researched the rear brake job on this site and sent him the procedure to put the vehicle in maintenance mode in order to replace the rear disc pads. So, he re-did the procedure for me and the vehicle seemed to drive better. However, I have noticed the rear tires seem to have been wearing out faster than the front tires.

    If I do the Penny test, it seems to me I have to replace the rear tires. On my dash I don't seem to see the parking brake engaged or the vehicle in maintenance mode.

    So, could the brake job caused the rear tires wearing out faster than the front? I want to replace all four of the tires with Bridgestone Ecopias with the 70k mile warranty from Costco.. However, I want to make sure the rear brakes won't wear out the new tires.

    Any way to tell? My oil change is due so I will be taking it to the dealer. I suppose they can tell me if the rear pads and calipers are ok.

  2. #2
    Registered Member Anchorman's Avatar

    2019 CX-5 GT 184 2.2 diesel auto - Sonic Silver

    Join Date
    Jan 2016
    Location
    Derbyshire UK
    Posts
    2,331
    If the parking brake releases without delay or drag (the vehicle will roll on a slight incline) it is probably free but jack it up to test for sure. If it is binding enough to cause tire wear, I think you would be aware of them being hot.

  3. #3
    Registered Member Conrad 16.5's Avatar

    2016.5 CX-5 Grand Touring AWD titanium/black

    Join Date
    Sep 2016
    Location
    Northern Illinois
    Posts
    845
    As easy way to check to see if you have brake drag is to drive your car for a bit without using the brakes at all, then coast to a stop somewhere where it's safe to do so. Place the trans in park and get out. Check the temp of each rotor with your fingers (or an IR thermometer if you have one). If you didn't use the brakes to stop or slow down then each one of the rotors should be relatively cool to the touch. If not, something is dragging.
    "Don't bother me with facts, Son. I've already made up my mind." -Foghorn Leghorn

  4. #4
    ZOOOOOOOOOM ZOOOOOOOOOOOM mazdadude's Avatar

    '16.5 Mazda CX-5 Touring AWD, '05 PRIUS

    Join Date
    Dec 2005
    Location
    Red Bluff, CA
    Posts
    3,420
    Quote Originally Posted by txt990 View Post
    I have a 16 CX-5 sport with around 40,200 miles and the original Geolander tires. I got the rear brakes replaced last year in July by my mechanic. Initially he didn't understand the Electronic Parking Brake. So, at that time I felt a bit of a drag when I drove the vehicle after the brake pads were replaced.

    I researched the rear brake job on this site and sent him the procedure to put the vehicle in maintenance mode in order to replace the rear disc pads. So, he re-did the procedure for me and the vehicle seemed to drive better. However, I have noticed the rear tires seem to have been wearing out faster than the front tires.

    If I do the Penny test, it seems to me I have to replace the rear tires. On my dash I don't seem to see the parking brake engaged or the vehicle in maintenance mode.

    So, could the brake job caused the rear tires wearing out faster than the front? I want to replace all four of the tires with Bridgestone Ecopias with the 70k mile warranty from Costco.. However, I want to make sure the rear brakes won't wear out the new tires.

    Any way to tell? My oil change is due so I will be taking it to the dealer. I suppose they can tell me if the rear pads and calipers are ok.
    It is unlikely that the tire wear you are seeing was affected by the brakes.

    #1 Is it possible that the mechanic, because he did not understand the maintenance mode, and performed the repair improperly, that brake attempt #1 might have caused damage to the mechanism? There is a TSB for this mechanism.

    #2 Without actually LOOKING at your tires, it is hard to diagnose over computer, but is the tire worn uniformly across the tire? If so, then most likely you have just a worn out tire. But if you have any feathering, cupping, uneven wear, then it might be time to look at the alignment.

  5. #5
    Registered Member yrwei52's Avatar
    Donated: $8

    2016 Mazda CX-5 GT AWD w/Tech

    Join Date
    Mar 2015
    Location
    Plano, Texas, USA
    Posts
    7,263

    Arrow '16 CX-5 possible rear brake drag causing tires to wear?

    Quote Originally Posted by txt990 View Post
    I have a 16 CX-5 sport with around 40,200 miles and the original Geolander tires. I got the rear brakes replaced last year in July by my mechanic. Initially he didn't understand the Electronic Parking Brake. So, at that time I felt a bit of a drag when I drove the vehicle after the brake pads were replaced.

    I researched the rear brake job on this site and sent him the procedure to put the vehicle in maintenance mode in order to replace the rear disc pads. So, he re-did the procedure for me and the vehicle seemed to drive better. However, I have noticed the rear tires seem to have been wearing out faster than the front tires.

    If I do the Penny test, it seems to me I have to replace the rear tires. On my dash I don't seem to see the parking brake engaged or the vehicle in maintenance mode.

    So, could the brake job caused the rear tires wearing out faster than the front? I want to replace all four of the tires with Bridgestone Ecopias with the 70k mile warranty from Costco.. However, I want to make sure the rear brakes won't wear out the new tires.

    Any way to tell? My oil change is due so I will be taking it to the dealer. I suppose they can tell me if the rear pads and calipers are ok.
    Yes it's possible rear brake drag causing tires to wear. And the problem very likely is from your rear brake calipers which cause dragging by Electrical Parking Brake. You need a new pair of revised rear calipers. See the TSB for more details:

    TSB R052/16C - Noise from REAR BRAKE/Trace of Rear Brake Dragging

  6. #6
    Registered Member

    92 MX-3; 17 CX-5

    Join Date
    Jan 2019
    Location
    MN
    Posts
    22
    If you got 40K miles from the factory tires consider yourself lucky and replace your tires.
    Have your brakes inspected at the same time - it will be obvious if they have been dragging.
    I would have expected the fronts would have worn more than the rears. But maybe you have been doing some tire rotation.
    Also there is no way that dragging calipers will increase tire wear. Dragging calipers will increase pad and rotor wear - but the tires turn as usual and get normal wear caused by friction with the pavement.

Similar Threads

  1. Replies: 35
    Last Post: 12-06-2017, 04:03 AM
  2. 2016 CX-5 Rear brake wear
    By ercarrasco in forum CX-5 Wheels, Tires, Brakes & Suspension
    Replies: 6
    Last Post: 12-03-2017, 07:33 PM
  3. 2015 cx5 also has rear brake wear issues?
    By Demento in forum CX-5 Wheels, Tires, Brakes & Suspension
    Replies: 5
    Last Post: 11-16-2016, 12:20 PM
  4. Premature ...... rear brake wear
    By jeffhawn in forum Mazdaspeed3
    Replies: 12
    Last Post: 03-25-2008, 09:23 AM
  5. Excessive rear brake wear
    By Greg S in forum Protege5
    Replies: 12
    Last Post: 04-12-2005, 12:26 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •