I have a rotational grinding noise on my Hawk wagon when I corner fairly hard. I am rather sure it is coming from the rear nearside wheel when going around right hand corners (or roundabouts) fairly quickly.
No visible signs of tyre rubbing on anything in the wheel arch.

It sounds like a rotational grinding noise and metal on metal. I thought is was the rear brakes so I have recently changed the discs and pads. it seemed to go away for a short while but not it is back but not as loud.

Could it be play in the wheel bearing causing the disc to rub somewhere? I Cannot hear any of the obvious wheel bearing grinding noises like rumbling etc. pointing to that though.

I am happy to order a bearing and replace if that is the next course of action.

thanks,

 

You haven't got Pedders struts on there have you?
I have them on my Hawk wagon and they're sh##e. Grind like anything when hard cornering...

 

nope.. have KYB (non-inverted) shocks with Prodrive springs. They have not been an issue in the 6 or so months they have been on. I also fitted new top mounts when I did them.
Also have a Whiteline 24mm rear bar. I did have a 27mm bar on till the weekend but this has not changed the noise at all.

tbh it does not sound like shocks as any kind of weight in the car does not seem to affect it. on cornering hard.
For the cost of £37 I am tempted to get a new bearing to see if it helps.

http://www.importcarparts.co.uk/part...var=0&dc=&gen=

 

Orite mate I had a similar thing a while ago it turned out to be the rear plate behind the disc it would only just rub on hard cornering.

When cornering hard on a right bend I would get the metal on metal noise but there would be no noise when turning left or on a straight line.

Hope this helps.

 

Sounds exactly the same... Do you mean the dust shield that the disc sits in?
what did you do to rectify? just give it a bit of a bend out?

 

Yea pretty sure its the dust shield that the disc sits in. The garage sorted it out for me as at the time I had no idea what it could be, Im sure just by bending it outwards it could solve the issue but think mine had a little bit of altering to solve it.

Didnt cost much to do it just an hours labour really beats buying a wheel bearing etc.

 

Awesome. cheers chap. I shall get the wheel off and have a look. I must confess I did not see any signs of rubbing when I done the brakes but could have missed it I guess.

will keep you posted.

 

No problem mate, it probably doesn't take much though for it to make the noise and might not show much sign of where it is rubbing.

Horrible it was when I would turn and it sounded as if its something terribly wrong touch wood its what I said it is

 

Had this happen the other week same symptms and all i did was push the shield away from the disc using a long screwdriver.

 

Trying to work out in my head what part could be rubbing. I am thinking the bottom of the shield as the wheel is under load from a right hand corner?!

 

lol my first thought was the splash guard / dust shield but thought nah I'd be wrong - kept reading and it seems I was on the money.

 

I also thought the same thing tbh. But after giving it a good look over while doing the rear brakes I could not see any signs of it touching.. I have got the screwdriver out and pushed the shield back a smidge. It was very close to touching at the bottom of the disc so I shall see how it is tomorrow.

I am sure you are all on the edge of your seats knowing my result lol.

 

hmm.. might have to get the disc off and investigate further. Still a noise on the way into work this morning. Not as loud (I think) but still there.

 

Did it make the noise before you did the brakes?

 

Yep. That was the reason I did them in the first place. Pads had worn on the edges and I thought it might have been them... Guess not.
Noise is slightly different from before I done them so my assumption is the disc is rubbing on something.
No time this evening so will try and take a look tomorrow or Friday.

 

The pads wearing uneven could be a sign that one or both caliper pistons are sticking. After a drive . feel the wheel or hub and check fr excessive heat

 

Pistons went back in okay. I think the rear discs were cheapies fitted by previous owner.
Pads had worn evenly but the inner pad was worn on the inside and outside edge with the centre still having plenty of meat. The disc had done the same. Imagine like a nice big lip on the inner and outer edges. If I still have the pad I will take a picture.

 

Mine did this (was dust sheild) and got worse with heat on trackdays. Got so loud I actually got black flagged for it

I had to take a dremel to the back of my disk to take off a bit of the lip around the inside, and also bent back the sheild slightly.

 

I can safely say additional weight does not cause the noise.
I am DJ'ing for a friends wedding at the weekend so collected some PA equipment tonight. This consisted of.
2x 1kw speakers
2x speaker stands
1x mixing desk
2x lasers
2x lighting effects
1x smoke machine
1x Lighting stand
along with all cables for the above...

Trust me when I say the car felt rather heavy... Guess what? No noise on way home.
This does indeed point to excess cornering force and the brake touching the shield.

If I am able to see straight on Sunday I shall get the disc off and have a good look.

 

I have found the culprit. The lip on the drum portion of the disc is rubbing just under where the shoes go. Now I know this is not a sefety issue as such but the noise is annoying.. Tempted to dremel it down a smidge to stop it. Thoughts?

 

If iys the dust shield id just knock it outwards with a screwdriver

 

No, not the shield. Much thicker metal.. The plate the shoes attach to.
I took a dremel to it and took the metal back a little, Improved slightly but not fixed. I think I will just leave it at that. The sound isn't constant it is only when I corner aggressively so not a big issue most of the time.

Does make me wonder if it is play in the bearing though.

 

Why not change it and then you can be sure. Whats the cars mileage?

 

Done 65k but has prodrive 18's on it along with prodrive springs and whiteline rear bar. (Firmer setup cause it to wear maybe?)

I had to do the front bearings about 5k ago because drivers side literally collapsed. But that was caused by the inner dust seal not being present and grease was like toothpaste.

 

Mine was catching same place:



I dremelled down the shiney lip on the inside of the disc, as that's what was catching:

 

The only thing i can suggest is that if the disc that were fitted were cheap ones, then maybe the part thats rubbing, as in the photo, is slightly wider , causing it to catch the plate.

 

Nope.. Discs were rubbing before I changed them. (This was why I changed them) As in old and new discs were both rubbing and only started doing this recently.... New ones are from Godspeed, I am sure given the amount of people on here that purchase them I am sure others would be having this issue.

I am also not very keen on grinding the lip down on the inside of the disc. Discs tend to be balanced when manufactured.
I would also be worried about affecting their strength by doing this.

 

HI
Just got your email , we have seen this before , had a customers car in years ago that was doing it , with the cars being newer then rust wasn't and issue , we found it was very easy to bend the backplates , and enough to cause this issue , especially when converting classic cars to 2 pots on the rear as you have to ground or cut the thin stone guard off.

With older cars we see rust being the issue more now , where the back plate is expending from rust build up , it will cause this , so grinding it back where its touching won't cause you any issues , and will stop it doing it.

Don't grind the disc , do it to the backplate

Hope this helps

Cheers Ian