[aussiei30GD2sr]

Car is making a noise which started just after i hit a pot hole at around 100 km an hour.
I did remember hitting a pothole but it didn't have a loud bang so i didn't think anything of it,
till i started to here this noise, which has gotten louder since it happened.

What i have noticed is when going straight the noise is there. It happens at all speeds from 5 km upwards.
If i turn the steering wheel to the left or right going around a bend the noise goes away. Soon you going straight again it comes back.

I have had a quick look under the car and didn't notice anything odd, all tho its dark i used a torch.
The Tyre hasn't gone down, and its been 10 hours since it happened.

I'm hoping its only the Tyre cross fingers, will try the spare on tomorrow.

Had this happened to anyone or ideas what it could be?

[FatBoy]

It may be damage to the tyre.  I remember years ago I hit a pothole in my car, and what I can only describe as a "blister" appeared on the sidewall of the tyre.  Maybe Surferdude might be able to provide more information.

[Just Rick]

Now that is a mystery,I suspect it is something in the front since you say it comes and goes as you turn then go straight again,leading me to believe    It is in the front,hope you find the issue

[aussiei30GD2sr]

Ye I'm hoping its just the Tyre which isn't much to replace, they are low profile on the SR, 17 ich, 225/45 profile which doesn't help
when you hit potholes.

What puzzles me why does it do it when going straight forward and soon you turn the steering wheel it stops.
Its a weird noise very noticeable in the cabin.

[Just Rick]

Ah! the dreaded low profile,I have bugged two in the past 12 months on one of our cars,by doing just that hitting a pothole

[aussiei30GD2sr]

Ah! the dreaded low profile,I have bugged two in the past 12 months on one of our cars,by doing just that hitting a pothole

What damage did you do? just stuff the tyre, where? or was the rim damaged to?

[Phil №❶]

Change the tyre with the spare and see if the noise is still there or not.

[Just Rick]

Ah! the dreaded low profile,I have bugged two in the past 12 months on one of our cars,by doing just that hitting a pothole

What damage did you do? just stuff the tyre, where? or was the rim damaged to?

Thankfully both times it was just the tyres

[aussiei30GD2sr]

Jacked the car up this morning.
As soon as there was enough ground clearance so the Tyre wasn't touching the ground, i grabbed hold of
the Tyre on each side to see if solid against rotor and it moved back and forth. It should be solid when attached to the rotor but there is movement. So i removed the Tyre off to check if anything broken.  I held onto the rotor on each side and it moves side to side only .5 mm

I did the same on the drivers side and there is no movement at all.

Everything else looks solid on the faulty side apart from the rotor has movement in it.
There is a large middle bolt in the middle of the rotor. Still trying to get hold of a mate who has a tool to see if its fully tight.

Any idea's other then checking bolts are tight. seems that is where the issue is.

[aussiei30GD2sr]

Found a you tube video of exactly what happening to me!
If you watch the first 20 seconds.

Rotor noise (?) - YouTube

[John B]

Just wondering if the wheel bearing was positioned fully on the hub axle when assembled and the jolt down the pothole has actually made the bearing go on the axle fully home , this would leave the retaining nut loose and require re adjustment. Normal practice when fitting a new bearing is to tighten up the nut to make sure the bearing is fully home and then back it off so there is not too much load on it,do not over tighten the nut. Just a thought.

[aussiei30GD2sr]

John - the car is only 6 months old all tho i did get the 15,000 service done this week, they wouldn't
of touched anything on the rotor or hub.

I would like to remove the rotor but really don't want to stuff around with it, to see if the hub is solid.

I recon this could be warranty, as it could just happen driving down the road, the pothole wasn't
even bad, my old car a hyundai getz hit way worse onces and was ok.

[John B]

John - the car is only 6 months old all tho i did get the 15,000 service done this week, they wouldn't
of touched anything on the rotor or hub.

I would like to remove the rotor but really don't want to stuff around with it, to see if the hub is solid.

I recon this could be warranty, as it could just happen driving down the road, the pothole wasn't
even bad, my old car a hyundai getz hit way worse onces and was ok.

 That should not occur at six months, if it is only the rotor moving it does sound like a bearing or maybe the rotor has failed where the bearing cup is although I have never come across that before. I will be very interested to know the outcome of the investigations. Sorry I can't come up with any other suggestions.Perhaps others might have some thoughts. Good luck.

[cruiserfied]

Get it to your dealer.
When you had wheel off and rotor moved I'm guessing the caliper and backing plate did not move?
With the wheel on hold front and rear of tyre and wiggle. Then hold top and bottom of tyre and wiggle. If movement is evident when wiggling top and bottom it's highly likely the bearing is loose.
The nut in the middle does hold the bearing together and is a 32mm. It would pay to tighten it if your not able to get to the dealer straight away but if you can get there tomorrow I would leave it so they can see the movement.

And these bearings are torqued to spec not the old style tighten then back off.

[aussiei30GD2sr]

Get it to your dealer.
When you had wheel off and rotor moved I'm guessing the caliper and backing plate did not move?
With the wheel on hold front and rear of tyre and wiggle. Then hold top and bottom of tyre and wiggle. If movement is evident when wiggling top and bottom it's highly likely the bearing is loose.
The nut in the middle does hold the bearing together and is a 32mm. It would pay to tighten it if your not able to get to the dealer straight away but if you can get there tomorrow I would leave it so they can see the movement.

And these bearings are torqued to spec not the old style tighten then back off.

correct only the rotor moved side to side. With the wheel on when holding top and bottom there is movement and its noticeable.

Going to go to dealer in the morning, as the car was only serviced during the week, maybe they didn't do something up correctly if they checked the brakes etc.

[John B]

As cruiserfied has confirmed my thoughts I agree with him on taking it back to the dealer. If as we suspect it is a bearing adjustment that is no big deal. You did say the pothole was not deep at all so I would doubt it would have damaged the bearing but they may like to check it. Rotors are not normally removed to check brake pads but they may have done a wheel bearing adjustment check . Let us know how you get on.

[aussiei30GD2sr]

As cruiserfied has confirmed my thoughts I agree with him on taking it back to the dealer. If as we suspect it is a bearing adjustment that is no big deal. You did say the pothole was not deep at all so I would doubt it would have damaged the bearing but they may like to check it. Rotors are not normally removed to check brake pads but they may have done a wheel bearing adjustment check . Let us know how you get on.

cheers will do John.

[Surferdude]

Doesn't sound like anything to do with a tyre or rim - unless the rim is buckled on the inside, but that wouldn't cause the free play.
I agree it's most likely a bearing issue but I'd be very surprised if anything the dealer had done in a service would have contributed to this.
Regardless of the size of the pothole, you WERE doing 100 kph. Imagine what would happen to your hand if you had it out the window at that speed and it struck even a glancing blow against a passing lamp post.
100 kph impacts are massive and you should make sure they check all front end components. The damage could be a lot worse than a bearing. And you don't want some part to fail in a few days or weeks as a result of this.
Also, a wheel alignment is called for front and rear as I assume the rear wheel would have followed the front through the pot hole.
Let us know what they find out.

[John B]

As surfer dude has said he doubts it is  anything the dealer has done , otherwise you would have heard the noise before the pothole incident.

[aussiei30GD2sr]

Doesn't sound like anything to do with a tyre or rim - unless the rim is buckled on the inside, but that wouldn't cause the free play.
I agree it's most likely a bearing issue but I'd be very surprised if anything the dealer had done in a service would have contributed to this.
Regardless of the size of the pothole, you WERE doing 100 kph. Imagine what would happen to your hand if you had it out the window at that speed and it struck even a glancing blow against a passing lamp post.
100 kph impacts are massive and you should make sure they check all front end components. The damage could be a lot worse than a bearing. And you don't want some part to fail in a few days or weeks as a result of this.
Also, a wheel alignment is called for front and rear as I assume the rear wheel would have followed the front through the pot hole.
Let us know what they find out.

Ye but the suspension should be able to cope with a small pot hole. It was tiny hardly noticeable, my old getz i remember going thru potholes that made a massive thug and i was like oh sh*t

Is this covered under the warranty ? Car been 6 months old should cover bearings that is pour they break that easy, I wont go in there saying they caused it, but will state it just happened after the service. The thing is i have the music on when im in the car and on the weekend when i drove and heard the noise i didn't. could be a chance it happened earlier on.

[cruiserfied]

Just go in playing dumb. Say there is a noise and as a precaution you checked the front end and there was movement.

[aussiei30GD2sr]

 

[eye30]

Any damage to the tyre and or wheel rim?

If not then they can not say it was accident damage so faulty part.

[aussiei30GD2sr]

Any damage to the tyre and or wheel rim?

If not then they can not say it was accident damage so faulty part.

Nope no damage to Tyre or the rim at all.  So to me its very strange for this to happen.

I just read the service sheet and it says inspected brakes and calipers. Wondering would they have lifted
the caliper off the rotor? would they pulled rotor off as once caliper lifted rotor comes off easy. The rotor is what is moving.
The sound is like a brake pad hitting the dics and mixed with a loose wheel when rotating against the hub making banging noise.

[Surferdude]

Any damage to the tyre and or wheel rim?

If not then they can not say it was accident damage so faulty part.

Nope no damage to Tyre or the rim at all.  So to me its very strange for this to happen.

I just read the service sheet and it says inspected brakes and calipers. Wondering would they have lifted
the caliper off the rotor? would they pulled rotor off as once caliper lifted rotor comes off easy. The rotor is what is moving.
The sound is like a brake pad hitting the dics and mixed with a loose wheel when rotating against the hub making banging noise.

Brake inspection can be carried out visually through the rim, especially if it's an alloy wheel.
I think you'll find the movement is in the bearing, which I doubt is an inner and outer tapered bearing like on the front of a rear wheel drive. These things are a press fit and fiddling with the brakes would have no effect anyway.
Thus, as the bearing allows the hub to move you could be getting pads scaping on the rotor or the backing plate.
With this type of bearing (IMHE), the only way you could get movement is through the big centre hub nut being loosened off (or the thread damaged). Neither would be touched in a service AFAIK.
But an impact "could" have damaged the bearing.

As others have said, play dumb and just say the car has developed this noise.
I'd still suggest you get the alignment checked - but do it after this is resolved, and maybe at a specialist.

[aussiei30GD2sr]

Any damage to the tyre and or wheel rim?

If not then they can not say it was accident damage so faulty part.

Nope no damage to Tyre or the rim at all.  So to me its very strange for this to happen.

I just read the service sheet and it says inspected brakes and calipers. Wondering would they have lifted
the caliper off the rotor? would they pulled rotor off as once caliper lifted rotor comes off easy. The rotor is what is moving.
The sound is like a brake pad hitting the dics and mixed with a loose wheel when rotating against the hub making banging noise.

Brake inspection can be carried out visually through the rim, especially if it's an alloy wheel.
I think you'll find the movement is in the bearing, which I doubt is an inner and outer tapered bearing like on the front of a rear wheel drive. These things are a press fit and fiddling with the brakes would have no effect anyway.
Thus, as the bearing allows the hub to move you could be getting pads scaping on the rotor or the backing plate.
With this type of bearing (IMHE), the only way you could get movement is through the big centre hub nut being loosened off (or the thread damaged). Neither would be touched in a service AFAIK.
But an impact "could" have damaged the bearing.

As others have said, play dumb and just say the car has developed this noise.
I'd still suggest you get the alignment checked - but do it after this is resolved, and maybe at a specialist.

Cheers surferdude will drop the car off in the morning hopefully get it back by evening, wishful thinking how much you rely on your car

Ye wheel alignment will be needed after this..

p.s Surfed up your way quite a few times, at Alex headlands, Caloundra and Noosa - tee tri's always good when you get a decent swell at noosa, rate it over the superbank on its day.

[Surferdude]

p.s Surfed up your way quite a few times, at Alex headlands, Caloundra and Noosa - tee tri's always good when you get a decent swell at noosa, rate it over the superbank on its day.

Yep. Alex (The Bluff) is good fun. Moffats is my local and it's hard to drive past it to go anywhere else. But I have had some fun at Ti Tree on occasion. I grew up on the Goldy - long before superbank though - 60's. 

[aussiei30GD2sr]

Update dropped the car off this morning and went for a drive with head mechanic, first thing he said
sounds like bearings are shot but needed to check but was certain its bearings.

Got a call 2 hours later and not bearings. The hub bolts came loose. They said they have had a few i30;s come in
with this issue, so im guessing it factory fault? Maybe the hub bolts need more torque. Recons he checked them all
and road tested all ok.

So something to be aware of with the GD2 i30's. Might be worth when you get your car serviced to ask them to check yours.
He said they should of been checked in service at 15,000 km? so someone took a short cut?

Wonder if they chuck in a free service for this? maybe a maccas voucher or fuel card haha.

[Surferdude]

Good result.
Thanks for the feedback.

[John B]