Loud clunking/banging sound from rear wheels

Strummer

Member
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Mazda CX5 Grand Touring
Hi Everyone.. Merry Christmas and a Happy New Year.

I have a CX5 touring, bought new, 25k, 16 months old, live upstate NY, mixed driving conditions (currently snow and ice) and I drive about 300 miles a week.

There is a loud clunking sound when I drive first thing coming from the rear wheels, normally I will feel this on the steering wheel. This happens within the first 50 ft or so. Doesn't seem to matter if I move off sharply or slowly. If I brake hard then pull away (the second time) the clunk will usually disappear, however if I brake softly and pull away (second time) the clunk will still be there. This has also had a few times at a junction after 6 miles of driving. I have never noticed it when the car is in motion, only when pulling away from stationery. I have pumped the brake pedal several times before pulling away and this didn't help. The problem is getting progressively worse. After stop/start driving the clunk will disappear.

I use my hand brake when parking. I swapped my wheels/tires for the winter combo over this weekend and I couldn't see any excessive pad wear or rotor scaring. The lug nuts were also correctly torqued.

On my 20k service the Syracuse dealer noted that the 'specialist' experienced the same problem but said there was little they could do. Claiming that some cars will do this. I have never experienced this with any of the cars that I've owned. I have booked my car in with the Rochester dealer for the 25k service and have told them of this problem.

I haven't seen any s/b bulletins on this issue.
Also, I made a post about this 'clunking noise' a while ago, thinking the problem was resolved, unfortunately it's not.

I would certainly appreciate any thoughts or comments

Many Thanks....
 
My first thoughts were a loose caliper or loose wheel lugs but, you covered that. Is this an AWD VERSION? If it is an AWD then I would look to suspension bushings or looseness. Could be suspensing bushings with FWD also I guess. Ed
 
Thanks Ed..
AWD version. Checked suspension, shaft, axle, sway bar link and nothing loose in the trunk (spare secured properly).
 
My first thought was the parking brake is sticking somewhere. As it heats up from driving, it loosens up. Could be water in the cable system somewhere that freezes and hangs up the brake. Or rust even given your driving in winter conditions.
 
Thanks minneostaart..
I've started using the parking brake regularly within the last 4 - 5 month. I had the same issue before then and this was suggested as a cure.
 
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