Who wants to diagnose this?
 

Possibly warped rotor and what the **** is that stone noise?

https://youtu.be/1VCJC0-jyJk

Cheers everyone

Doubt you actually warped the rotors. Excess pad deposits due to poor braking habits is much more likely.

I'd be looking for rocks in the calipers or something like that - did you drive through dirt or gravel road recently? If not, it may be the wheel hub going?

That definitely sounds like you have a glazed spot on the left front rotor. This can be caused by excessive heat by being in stop and go traffic or braking at the last second when coming to a lights.

This can be remedied by machining the rotor. Also, if the glazed spot is too deep, you will be having to get new rotors.

Did you take the wheel off and look at the brake?

14" rotors don't warp unless you put them on the Starship Enterprise.

Even then... they'll only change shape if you dunk hot rotors in water.

I've had my rotors 1000 F+... they're fine.

Okay so to answer people, Ive had the rotor off and looked at the brake found nothing, we are actually looking at the rear right tyre not the front left and i'm reversing the car, I think there may be a stone rattling around in the exhaust possibly.... but so much corrosion on the exhaust now I would to cut the bolts haha

Check the parking brake.

Mine are warped already after 20k miles. I thought the sport brakes were supposed to be good but all I've ever experienced is immediate brake fade, warping, and excessive dust. I daily my Z and drive it hard sometimes but I definitely don't abuse it.

HOW... did you warp a 355mm rotor?

Do you wash your car at the race track? lol

It's not warped, its uneven pad deposits. I've never had this problem since I got into a 370z, and I had the problem on both my 370z's. I had to have rotors machined twice on my 2011 and it still came back a third time. It happed on my 2013 as well.. this time I swapped the pads to StopTech Street pads when I had the rotors machined and it seems to have solved the issue, though it is too soon to tell for certain.

Yeap, the factory pads are horrible about pad deposits.

Good to know. I've never had this problem on any of my previous cars either. Looks like I'll be getting my rotors machined and new pads then. Thanks

You don't usually need to get the rotors turned to get rid of pad deposits. Just doing brake bedding procedure will work most of the time.

Another possibility is that you are setting your parking brake when your rotor are really hot. This can also cause your pads to stick to rotors and leave deposits. I hardly ever use my parking brake because of that. In worse case scenarios it can cause the rotor to deform.

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In all fairness, you might have something here, I always forget this rule and the Z is my daily drive, any thoughts on the stone noise tho?