Grinding Sound When Braking, From Front Left

[pyro-ns]

Hi all,

The girl's stag has developed a nice grinding sound that only appears when braking. I would say that it makes that it makes the sound, for about 10% of the wheel's revolution, when braking anywhere from about 40k's and below.

It also has a bit of a shudder at speed and braking down hills from speed (speed being about 100km/hr btw) almost shakes the car into oblivion, unless you get off the brakes and then start braking again. I know the alignment is pretty average and I've got it booked in for that, but I'm still trying to diagnose the grinding, hence the post.

I'm trying to figure out what the options are and so far I've got:

CV joint -

Wheel bearing - unlikely?

A braking component - pads aren't down to the wear markers yet I don't think, if they are, they're not making any noise. Haven't measured width of rotors yet (not sure what acceptable widths are on stags anyway)

Is there anything I've missed? I've had a look under the car and can't see any signs of rubbing or interference. We are running 235's on 19x9's all round and the fronts clear the shocks under all conditions. I haven't pulled the boot back to have a look inside yet (can that be done without damaging the boot?) and I can't see anything wrong with the brake assembly (again, haven't pulled anything apart).

It's going in for it's 100k service soon (hopefully next couple of weeks) too, so I'm praying that it'll hold out that long. I don't have the time or work area to play with it

Also, I've done a search and nothing yet is coming up with the same symptoms. The closest thing I've found, turned out to be a wheel bearing, but that was a constant grinding noise.

Any suggestions you've got will be greatly appreciated guys

Cheers,

Josh

[scotty nm35]

Warped disk? Perhaps a bolt loose?

All the Japanese imported cars I have owned needed new disks when they came over due to being warped. They all seemed to get worse when hot and were less noticeable cold.

As for the grinding, if there are no loose bolts it could be a rock stuck under the caliper.

[TRB-001]

lol by the sounds of it the pads are passed the wear markers.....

check your break pads, i could be worn low on the inside pad so it might look normal from the outside......

turn the wheel all the way to full look and see if the inside of the rotor looks marked.

[SABBAi]

I had a car do the same thing and it turned out to be a wheel bearing.

The only other things I can think of is that the pad is getting low or a stone is caught in there somewhere.

[32TAXI]

Can source cheap pads for S2 stagea now, I paid $44 - Cant remember p/n thou!

Just machine disc's at same time if over minimum thickness.

Still could be wheel bearing but hope not.

P.s. Hows things going in SA for you both?

[pyro-ns]

Thanks for the replies guys. I'll see what i can get in the way of new pads and rotors and report back if anyone's interested.

Can source cheap pads for S2 stagea now, I paid $44 - Cant remember p/n thou!

Just machine disc's at same time if over minimum thickness.

Still could be wheel bearing but hope not.

P.s. Hows things going in SA for you both?

things are alright now that we both have jobs, haha, was looking a little shaky for a while. just starting to get back on our feet now. the trip down was eventful. first an oil leak, then split cv boots... put an extra day on the trip down. can't say i recommend the brisbane to adelaide drive. it sounds like a great idea at first, then you get into your second day and it's a little tedious... how'd you go with that ca? did you strip it back?