Grooved discs - noisy?

[jcas]

This may be a bit of a silly question but just want to check.... I've fitted grooved discs on my E30 and now there is a very loud rumbling when I brake - is this normal, due to the grooves?

Cheers, James

[steve_d]

Would not think so.
How long ago were they fitted i.e. have they had a while to bed in?

Steve

[GreenV8S]

I don't hear anything under normal braking but get a murmuring sound under heavy braking. Different calipers/pads/groove patterns are likely to behave differently though. It's certainly not unusual to get noises from grooved discs.

[Podie]

I've got grooved & spotted disks (front and rear) on the Mondeo... boy are they noisy! Had them checked over to make sure nothing was wrong... just seems it's one of those things.

[wildcards]

Yep, I've had grooved discs before and they were quite rumbly.

[jcas]

Puts my mind somewhat at ease, still a bit disconcerting though....

[m1key]

I've got grooved discs on my Golf VR6 and they do grumble a bit, more so when braking hard. At the time of fitting I was told they would be a bit noiser than standard discs and that crossed drilled & grooved ones more so.

[haggle]

yep they can be noisy and give pedal feedback the grooved ones on my car make a almost electric buzz when heavy braking

[That Daddy]

Grooved fronts(no holes)no hissing graunching or anything,lucky i guess i was expecting some hissing but no,not much help am i