14 SGT plagued by wobble/vibration - 2004 to 2016 Mazda 3 Forum and Mazdaspeed 3 Forums
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post #1 of 14 (permalink) Old 04-16-2017, 02:10 PM Thread Starter
lilbenz230
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14 SGT plagued by wobble/vibration

Car has 31,300 miles and brand new tires just installed/balanced. Rims checked, no bends. Alignment check is good. Car was built in 2/2014 and in Japan.

There are 2 main symptoms that I'm having. 1st is a persistent vibration in the chassis/floors/seats at highway speeds from 60-80mph. The tire shop says the balance is correct per their machine. 2nd is a wobble felt in the steering wheel under hard acceleration, say merging onto an interstate. It's brief, but definitely there.

My local dealer is pretty useless, so even though the car is under warranty I am probably going to need to use an independent specialist. But does anyone have any suggestions where to start looking?
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post #2 of 14 (permalink) Old 04-16-2017, 02:30 PM
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Had a similar vibration on my wife's Chevy Cruze, even though that tire shop said it was properly balanced.

Did either your tire shop or your dealer use a Hunter Road Force Balancing Machine on your wheel? If not, change to one that does. A road force machine applies reverse pressure against your tires while it is being spun balanced. It does so via a second roller, stimulating the upward force the road exerts against your tires while you are driving.

Then took her Cruze to one tire shop that all their balancing equipment is Hunter Road Force Balancing machines, and the 60-68 MPH vibration stopped 100%, and not surprisingly, I since have changed my tire shop to the one with HRFB machine now. BTW, GM has just made HFRB machines "essential equipment" for all its dealerships -- though I do not know whether they are giving them a 90 day window to get it installed.
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post #3 of 14 (permalink) Old 04-16-2017, 03:23 PM Thread Starter
lilbenz230
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The shop I use does have the RFB capabilities, but they use spin balancing primarily. I plan to go back to them, but the wobble under acceleration does not seem like it would be tire related?
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post #4 of 14 (permalink) Old 04-28-2017, 11:57 AM
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My 15 SGT wobbles terrible, under very similar conditions. I don't drive it much so I kind of just deal with it but it makes me hate the car pretty passionately.

No updates to offer? I've never really pursued any corrective measures. Perhaps I should just leave it with a tire shop for a couple days.

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post #5 of 14 (permalink) Old 04-29-2017, 12:38 AM
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Originally Posted by IHeartGroceries View Post
My 15 SGT wobbles terrible, under very similar conditions. I don't drive it much so I kind of just deal with it but it makes me hate the car pretty passionately.

No updates to offer? I've never really pursued any corrective measures. Perhaps I should just leave it with a tire shop for a couple days.

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Have you checked the wheels for true? Steve just had one of the RX8 wheels on his 6 trued up for about 90 bucks. It was bent at the hub.

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post #6 of 14 (permalink) Old 05-13-2017, 06:20 PM Thread Starter
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UPDATE:

Cheap tires were put on the car when I got it, and at least one of them had an issue being out of round. I had all of them returned under warranty and paid the difference for some Continental DWS06s. Vibrations are gone.
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post #7 of 14 (permalink) Old 05-13-2017, 08:13 PM
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Quote:
Originally Posted by lilbenz230 View Post
UPDATE:

Cheap tires were put on the car when I got it, and at least one of them had an issue being out of round. I had all of them returned under warranty and paid the difference for some Continental DWS06s. Vibrations are gone.
Do you recall what these cheap stock tires were? Were they the Dunlops?
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post #8 of 14 (permalink) Old 05-14-2017, 10:29 AM
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If it were me I'd like to see the wheels spin on a roadforce machine to see if there is an underlying issues with the tires or to see the rim's rotate (to rule out the wheels 100%). From there, I'd suspect a slightly out of balance drive shaft. My 2010 had something very similar - - so try that. Good luck!
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post #9 of 14 (permalink) Old 05-14-2017, 12:06 PM
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When I had my tires immediately changed from Dunlops to Michelin A/S 3+'s, putting the new tires on Mazda's 18" dark alloy accessory wheels, had my tire shop tell me the run-out on the new ones. All were good. I think we consumers should be not only always be requiring road force balancing when we get new tires, but asking and considering for wheel run out information, especially if you have just bought and are initially mounting tires onto new wheels you just bought at the tire shop. Here's more wheel/tire balancing info for thos who want:

Tire & Wheel Balancing
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Last edited by Road Trip; 05-19-2017 at 05:32 PM. Reason: Fix typo I just discovered.
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post #10 of 14 (permalink) Old 05-16-2017, 12:29 PM
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I am in the exact same boat...14 sGT with 32k, Japan built. Noticed a vibration coming from the front (right strut had been replaced 6 months ago). Took it in and they found that 2/4 of my new Goodyear Eagles were out of round. They were replaced with RSA and I still have the same issue. Took it back in and they said it was a thrown weight. Fixed supposedly, but the vibration is still there. I asked them to check suspension components but they stopped each time at the tire. I'm out of warranty, so I'm not sure what my next step is. Thoughts?

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