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Old 08-28-2009, 02:16 PM   #1
subygirl
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Default New 09 WRX wheel vibration

Brand new car - 1,700 miles on the ODO. I swapped out the OEM tires for Dunlop Sp Sport Signature all seasons originally 2 weeks ago and a distinct steering wheel vibration showed up at highway speeds. Got the car aligned, vibration still there. Replaced 2 tires because they may be defective, vibration still there. Replaced all four tires with Bridgestone Potenza RE960's, vibration still there. Took off all 4 wheels and retorqued the lugs, vibration still there.

There was no vibration on the stock set of tires. The Dunlops were balanced by 3 different shops and roadforced twice with no difference. The Potenzas have also been roadforce balanced. The tire shop ordered in 6 tires and gave me the best 4, so I know the tires are good. The vibration varies sometimes and can sometimes show up as a seat vibration in addition to the steering wheel. Vibration stays the same in 4th and 5th gears and with clutch disengaged.

The car is a 2009 WRX premium 5-door with wheel locks (if that matters)
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Old 08-28-2009, 05:41 PM   #2
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.............

Last edited by subygirl; 08-29-2009 at 06:37 PM.
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Old 08-28-2009, 09:50 PM   #3
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did a wheel get bent when the tires were mounted???

did the tps thingies get borked???
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Old 08-28-2009, 10:27 PM   #4
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Quote:
Originally Posted by Uncle Scotty View Post
did a wheel get bent when the tires were mounted???

did the tps thingies get borked???
Not that I know of since none of the 4 shops I went to said anything about a rim issue, and they all knew of the vibration symptom. TPMS was replaced each time the tires were changed (twice so far).

I changed the rear tires to the front one at a time to see if the vibration goes from the seat to the wheel. My best guess so far is that it is something to do with the driver side front and passenger side rear as of right now. I go back to discount tire in the morning.
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Old 08-29-2009, 09:46 AM   #5
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Interesting issue.

Is the speed range a constant, I will assume ~62-67MPH?
Did anyone look at your struts (yes, I know it seems low mileage)?
Have you tried to bed your brake pads (funky stuff on the rotors can show up as a vibration)
Maybe drive in a straight line (long parking lot) @ ~10MPH, have someone watch each tire in turn for signs of an alignment issue/bent rim/etc, anything but the wheels & tires running straight & true.

Just trying to get the thoughts going.
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Old 08-29-2009, 05:05 PM   #6
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It starts around 60 mph and gets a bit worse toward 70. Haven't gone over 70 since the roads around here are slow as far as highways go. The vibration isn't huge at all, but it is noticeable. I haven't beaded the brakes, I'll try that.

Just went to a different discount tire again today and the roadforce numbers were high. They moved the tire around the rim and were able to get 3 of the 4 down to acceptable numbers. The fourth, they replaced. The vibration is still there. They looked at the wheels again and said the only thing they could find that might cause it is actually my lug nuts. Apparently it looks like I should probably have extended thread lugs because the 45 degree angles of the lugs and wheels aren't fitting right and are causing the lug hole edge to 'mushroom' a bit. Thoughts?
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Old 08-29-2009, 05:55 PM   #7
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i'd look for play in the tie rods and bends in the wheels.

your car shouldn't be doing this, and it sounds like it happend when you got the new tires on there. there shouldn't be an issue with the lugs, especially if they are the factory ones. did someone put on the wrong lugs?
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Old 08-29-2009, 06:00 PM   #8
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Its the same lugs that I got with the car at the dealership. But the edge of the stud holes on the wheels are definitely 'mushrooming'. A pen can catch the edge very easily. I guess the question is: were 09's supposed to come with extended thread lugs? Were all 4 of my wheels machined improperly? Is this normal?
No bends in the wheels - been verified by several shops.
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Old 08-30-2009, 08:55 AM   #9
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Quote:
Originally Posted by Peachangelmusic View Post
They looked at the wheels again and said the only thing they could find that might cause it is actually my lug nuts. Apparently it looks like I should probably have extended thread lugs because the 45 degree angles of the lugs and wheels aren't fitting right and are causing the lug hole edge to 'mushroom' a bit. Thoughts?
Are these OEM rims & lugs, or aftermarket?
Is the angle between the lug and the rim wrong, or does it appear the lug is bottoming out on the stud?
Some rims come with specific lugs to fit the rim correctly.
Or, does it look like some numb-nuts damaged the rims, where the lugs go, previously?

At least it sounds like you found a tire place that has a bit of a clue.
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Old 08-30-2009, 11:43 AM   #10
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These are OEM rims and lugs. If someone damaged the rims, then they did it to every hole on every wheel. The tire guy's guess was that the angle between the lug and rim is wrong. He didn't think it was from over torquing the wheel.
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Old 08-30-2009, 08:12 PM   #11
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Apparently someone else in my area had the same issue on stock tires. Trying to track down what solved his issue.

Bump for any ideas.
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Old 08-31-2009, 01:50 PM   #12
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TPMS light came on this morning. Tire pressure was a little low, but it was cool outside (27 - 29psi) So I added air to the tires, but the light is still on. The vibration is noticeable now at around 45. It is sitting at the dealership now with all the previous paperwork, so we'll see what they come up with.
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Old 08-31-2009, 02:04 PM   #13
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Good luck!
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Old 08-31-2009, 07:09 PM   #14
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Well, if you had them road forced then it is not a wheel issue. Road forces can detect if a wheel is out of round. If anything I would check your hubs, because one could have been slightly damaged when mounting the wheel and tire assembly back onto the vehicle. Then again, if this was taken off and reinstalled several times, I would hope that some one took a good look at your hubs at least once.

As far as the balancing went, what coning methods did the techs use on your wheels?
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Old 08-31-2009, 07:11 PM   #15
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thats really odd..i have my 09 wrx and dnt feel any of that
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Old 08-31-2009, 07:43 PM   #16
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they used regular cone method and 'finger' method with the hunter balancer
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Old 09-01-2009, 05:34 PM   #17
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The dealership is keeping my car for at least one more day. The desk guy said the tpms light was a programming thing. The tech has tried a few 'balancing methods' and moved the tires around on the rims a bit and the vibration is still there.... could have told him that and saved him the time! Hopefully I will have some answers tomorrow.
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Old 09-02-2009, 05:25 PM   #18
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Got my car back today Took the tech two days, but in the end, it was finally a balance issue. No clue how or why it took 6 shops and 4 road balance machines to figure this out. The front desk guy said their hunter gsp9700 is pretty much new, so maybe that has something to do with it. Good thing is they treated this as a warranty claim so I didn't have to pay them anything!! The Bloomington dealership may just be on their way to earning me back as a paying customer
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Old 09-08-2009, 10:58 AM   #19
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i have this same issue on my 08. i had stock steelies with re92a's and there was no vibration!!! i bought new 06 Style rs wheels from the dealer had good year eagle F1's mounted on them and now the car shakes at 60-70. been to many shops and they say the roadforce picked up nothing some were .025-.075 off but still after proper balancing and alignment it still shakes in steering wheel and my passenger head rest i can see it flap HELPP
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Old 09-08-2009, 11:12 AM   #20
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yea, my vibration came back after 2 days back from the dealership. It is back there today, so we'll see what they say again.
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Old 09-08-2009, 02:21 PM   #21
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this may be one of those 'cant use those tires on that car or they will do this' kind of thing

there may be a particular frequency that the tire produces at that speed that is amplified by the vehicle and is doing this

a different tire may not have this harmonic
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Old 09-08-2009, 03:41 PM   #22
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Quote:
Originally Posted by Uncle Scotty View Post
this may be one of those 'cant use those tires on that car or they will do this' kind of thing

there may be a particular frequency that the tire produces at that speed that is amplified by the vehicle and is doing this

a different tire may not have this harmonic
Only thing is that it has done this on the Dunlop Sp sport signature tires and the Bridgestone Potenza Re960's too. The Re960's specs match exactly with what came on the car from the factory. Plus the tech was able to get rid of the vibration through careful balancing, though it came back in less than 2 days. This tells me that it is not the tire.
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Old 09-08-2009, 05:27 PM   #23
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then I suggest having all the rotors swapped and/or all the wheel bearings swapped

the next thing may be swapping all the axles
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Old 09-08-2009, 09:36 PM   #24
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Quote:
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then I suggest having all the rotors swapped and/or all the wheel bearings swapped

the next thing may be swapping all the axles
Would any of these cause a vibration that can go away for a few days at a time?


Dealership couldn't feel the vibration today they said. It is still there, just not as pronounced as before. If they felt it right after it was balanced last week when there was no vibration, then drove it now, they would feel the difference. Oh well. Guess I need to wait for it to get worse before it is noticeable enough again.
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Old 09-09-2009, 12:04 AM   #25
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Quote:
Originally Posted by Peachangelmusic View Post
Would any of these cause a vibration that can go away for a few days at a time?


Dealership couldn't feel the vibration today they said. It is still there, just not as pronounced as before. If they felt it right after it was balanced last week when there was no vibration, then drove it now, they would feel the difference. Oh well. Guess I need to wait for it to get worse before it is noticeable enough again.
this is one of those things that you may never solve
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