Potential caliper issue?

[XtremeMaC]

What would the point be to a wager? Like my sensible possibility is worthless unless I put money on it? If it's a rock then I'm glad to go with that and happy for the OP but the E brake in my mind is another valid option as well and something to consider esp in a brand new car.
Time will tell I guess.

Is e-brake failure on Supra or BMW a common one? Not a rhetorical or sarcastic question, I'm curious.

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[Evolution]

What would the point be to a wager? Like my sensible possibility is worthless unless I put money on it? If it's a rock then I'm glad to go with that and happy for the OP but the E brake in my mind is another valid option as well and something to consider esp in a brand new car.
Time will tell I guess.

Phil

Just having a little fun with you as that is 100% the classic rock noise. It's happened to me 20+ times.

 

[lucky phil]

Just having a little fun with you as that is 100% the classic rock noise. It's happened to me 20+ times.

What I find amazing is that in 50 years driving cars, riding bikes working as an engineer in a professional capacity and engineering cars and bikes in my spare time I've never had an issue with stones caught in brakes. Every friend I have is the same as me, engineering type involved in bikes and cars and neither have they. The only place I've ever heard of it is on the internet. Not saying it's not true but you'd think with my years and background and friends I'd have experienced it. I can say one thing though, the brake rotor with a score mark in it is 99.9% of the time due to hard spots in the actual brake pads. Even the best pads can't be a 100% hardness consistency though the entire pad and they can have hard spots that cause disk scoring. People often blame it on rocks but it's not.

Phil

 

[lucky phil]

Is e-brake failure on Supra or BMW a common one? Not a rhetorical or sarcastic question, I'm curious.

I wouldn't think so but if you take a look at what's in the E brake side of a rear calliper there quite a lot of stuff there. I was thinking it might be more the E brake actuator isn't fully releasing and causing the brake to drag a bit. It's anew car so a rogue component is not unheard of. As is an assembly issue from the factory.

Phil

 

[Evolution]

What I find amazing is that in 50 years driving cars, riding bikes working as an engineer in a professional capacity and engineering cars and bikes in my spare time I've never had an issue with stones caught in brakes. Every friend I have is the same as me, engineering type involved in bikes and cars and neither have they. The only place I've ever heard of it is on the internet. Not saying it's not true but you'd think with my years and background and friends I'd have experienced it. I can say one thing though, the brake rotor with a score mark in it is 99.9% of the time due to hard spots in the actual brake pads. Even the best pads can't be a 100% hardness consistency though the entire pad and they can have hard spots that cause disk scoring. People often blame it on rocks but it's not.

Phil

I know what you mean. I have owned at least 50 different types of cars and the supra is 1 of 2 I have experienced the noise with. My evo was the the other. If you look at the design of the heat shield, it makes perfect sense. Horrible design.

 

[lucky phil]

I know what you mean. I have owned at least 50 different types of cars and the supra is 1 of 2 I have experienced the noise with. My evo was the the other. If you look at the design of the heat shield, it makes perfect sense. Horrible design.

Yea it doesn't look "optimal" lol.

Phil

 

[Todday1]

I will just add I have had many Rocks get caught in the backing plate as well as rocks actually getting logged between brake caliper and rim. actually had to replace an apex wheel once. And this was not from going off track. But just in an out if pits or if there is some on track small stones. So I also expect it is a stone otherwise double check brake pads especially inside left rear as that one is hard to see.

 

[razorlab]

What I find amazing is that in 50 years driving cars, riding bikes working as an engineer in a professional capacity and engineering cars and bikes in my spare time I've never had an issue with stones caught in brakes. Every friend I have is the same as me, engineering type involved in bikes and cars and neither have they. The only place I've ever heard of it is on the internet. Not saying it's not true but you'd think with my years and background and friends I'd have experienced it. I can say one thing though, the brake rotor with a score mark in it is 99.9% of the time due to hard spots in the actual brake pads. Even the best pads can't be a 100% hardness consistency though the entire pad and they can have hard spots that cause disk scoring. People often blame it on rocks but it's not.

Phil

I choose to not let my decades of experience close my mind to new possibilities. The rock curse has happened to me on my Supra, one of my VW’s, and have seen it happen to a handful of local Supras. All in real life and not “on the internet”.

I do know you like to sound smart and superior on the internet though, so carry on.

 

[lucky phil]

I choose to not let my decades of experience close my mind to new possibilities. The rock curse has happened to me on my Supra, one of my VW’s, and have seen it happen to a handful of local Supras. All in real life and not “on the internet”.

I do know you like to sound smart and superior on the internet though, so carry on.

Nor do I that's why I posted Quote'...... I'm not saying it doesn't happen" Just I've never experienced it it first hand and neither has anyone I know. Maybe it's more a track related issue with hot sticky tyres picking up stones and debris on the edge of the track and pit and track entrance. All my race track time has been on motorcycles which don't have an issue getting rocks in the brakes because we stay out of the marbles on the track and we don't have brake shields.


Phil

 

[FuzzyRev]

Mechanics hate this one trick!

Calm down Scotty Kilmer

But to OP, 99.999% sure it's a small rock stuck between front rotor & dust shield. Owning these cars, it's not a matter of IF, but WHEN it'll happen to you. Keep driving and do some quick swerves left and right to flex the rotors a little bit and it should fall out. It also typically does no damage because the top-grade iron in these rotors is much harder than most small pebbles.

 

[FuzzyRev]

Yea it doesn't look "optimal" lol.

It sure does look "optimal" ....optimally engineered to capture stones!

 

[Hien]

From what I've seen, people just give it some gas or hit the breaks, and it pops right out.

 

[lucky phil]

Could the noise be spring transport wedges not removed? Maybe one dislodged a bit and rubbing? Less than 600klm old car, maybe. Just a thought that came to me.

Phil

 

[kashuab]

Haven't heard anything from the shop yet. They started looking into it today, and I'm assuming if it was just a rock I'd have heard back by now hahah. I'll update y'all when they get back to me

 

[kashuab]

It was a rock.

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