nwjade

So my 2018 911 C2 with only 1600 miles has developed an intermittent scraping sound from the wheels. It wasn't there the previous time I drove it that I noticed and then I drove it a couple of days ago and it was.

I jacked up the car and checked each wheel individually. The sound is coming from 3 of the 4 wheels.

I've linked a video I made and would very much appreciate getting opinions what's caused the problem and how serious it is before I contact the Porsche dealer.

arter

brake rotors have a little surface rust ( from not driving) and the pads are dragging on the surface making the noise.

Go out and give your car several hard braking events ( 60+ to 0) and see if that clears the problem up.

CSK 911 C4S

1st car?

Pretty much happens to every car that has disc brakes.

If you wash the car and then put it up it's actually worse for the first few miles.

nwjade

I haven't been driving the car much and will do as you suggest and see if that clears the problem.

What's confusing is why the right front wheel has no noise and little to no scoring lines on the rotors compared to the other 3... I'm not liking that. Is that normal...nothing to worry about?

Porsche_nuts

I was thinking maybe a small pebble got caught between you pads and rotor. Plausible explanation for one wheel, but not 3. I would do the hard braking and see what happens.

nwjade

My other 2 cars with disc brakes aren't doing this but are driven more often.
Thanks for the reply.

DY369

I would say it is "kinda normal"

Meaning it would be easy for the dealer to say it is normal and send you on your way. That being said I have had 1 car that did that pretty bad. Any time I was driving slow in a parking lot or over a speed bump would rub and make a good amount of noise. Also have had the same exact model car and that car does not do it.

So I would also say it is random but "normal".

Another tip....don't wash your car and put it away. The pads will rust to the rotors.

nwjade

Thanks for the reply.

But what's with the more pronounced scoring lines on the 3 noisy wheels vs the 1 non noisy wheel?