Serious Brake Issue

[cj428]

That's weird you must have gotten a rock or something caught up in the brake. Rust marks are normal as already noted.

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[nastang87xx]

Update,

Dealer has pulled off both rotors and pads to look at them. The rotor themselves are fine but the pads on the passenger side were missing a "quarter size" piece of brake pad material and had damaged the rest of the pad when it drug trough from braking.

Ford is replacing the pads.

Missed your update here. Good to hear!

 

[krt22]

Note to self: Do not drive in the rain

 

[mattlqx]

That's weird you must have gotten a rock or something caught up in the brake. Rust marks are normal as already noted.

Or just defective compound on the pad. Could've been dropped or something and developed a fracture.

 

[Super Werty]

By the way it should be 60-5 hard braking then coast. You don't want to stop hard and stay motionless with pad contact

 

[jasonstang]

Brake pad materail falling off?
That sounds very strange.
The only time my pads look trashed is after I do a track day. The material looks it had been chewed off the metal backing.

 

[crazyfish]

Also no one ever posts but you are not to leave vehicle with HOT brakes and apply emergency brake and let it set! This is most performance car manuals. When you park your car, shut it off and leave it in 1st gear or reverse. Emergency brake is exactly that! Most people use it as a parking brake and in the manuals it usually says to only use it for emergency use and parking uphill or downhill if need be. Dealers love that people use their emergency brakes for parking. This creates HUGE damage to rotors (warping) , pads sticking to rotors, as I think happened in this case, boiling and premature brake fluid life expiration, emergency brake cable stretch from heat soak (so when you really need it. It may not engage or work). I learned the hard way with my 1st viper in 98 and then dodge showed us and told us about bedding brakes and brake care. After that all my vehicles have undergone same treatment with excellent performance and long life. If it isn't broke why fix it.

So don't use emergency brake to hold car when parking especially if brakes are hot! Also by pulling a lot of the new abs controlled brake systems pressure is also applied to the fronts in some matter or the other.

 

[plateofshrimp]

I've had little pieces of pad come off after a track day and dig a gutter in the rotor. No big deal, at worst you will need the rotor turned.

 

[jasonstang]

Also no one ever posts but you are not to leave vehicle with HOT brakes and apply emergency brake and let it set! This is most performance car manuals. When you park your car, shut it off and leave it in 1st gear or reverse. Emergency brake is exactly that! Most people use it as a parking brake and in the manuals it usually says to only use it for emergency use and parking uphill or downhill if need be. Dealers love that people use their emergency brakes for parking. This creates HUGE damage to rotors (warping) , pads sticking to rotors, as I think happened in this case, boiling and premature brake fluid life expiration, emergency brake cable stretch from heat soak (so when you really need it. It may not engage or work). I learned the hard way with my 1st viper in 98 and then dodge showed us and told us about bedding brakes and brake care. After that all my vehicles have undergone same treatment with excellent performance and long life. If it isn't broke why fix it.

So don't use emergency brake to hold car when parking especially if brakes are hot! Also by pulling a lot of the new abs controlled brake systems pressure is also applied to the fronts in some matter or the other.

The only time handbrake is needed is when parking on hills. Other wise just put it in 1st gear or reverse.

 

[AMpowerJ]

Also no one ever posts but you are not to leave vehicle with HOT brakes and apply emergency brake and let it set! This is most performance car manuals. When you park your car, shut it off and leave it in 1st gear or reverse. Emergency brake is exactly that! Most people use it as a parking brake and in the manuals it usually says to only use it for emergency use and parking uphill or downhill if need be. Dealers love that people use their emergency brakes for parking. This creates HUGE damage to rotors (warping) , pads sticking to rotors, as I think happened in this case, boiling and premature brake fluid life expiration, emergency brake cable stretch from heat soak (so when you really need it. It may not engage or work). I learned the hard way with my 1st viper in 98 and then dodge showed us and told us about bedding brakes and brake care. After that all my vehicles have undergone same treatment with excellent performance and long life. If it isn't broke why fix it.

So don't use emergency brake to hold car when parking especially if brakes are hot! Also by pulling a lot of the new abs controlled brake systems pressure is also applied to the fronts in some matter or the other.

Sorry but this is incorrect. Some cars clamp the brake pad down with the emergency brake but many including the GT350 do not. They have a drum style parking brake built into the hub. It has nothing to do with the pads and nothing to do with the OP's problem.

 

[Hack]

Note to self: Do not drive in the rain

It's a car. It's not made in heaven. Just drive the thing and have fun - or don't. I don't care what you do, but I will be driving mine. Why spend so much money and then leave it in the garage?

I've had little pieces of pad come off after a track day and dig a gutter in the rotor. No big deal, at worst you will need the rotor turned.

Right. Also debris tends to dig gutters and normal wear isn't perfectly uniform.

Sorry but this is incorrect. Some cars clamp the brake pad down with the emergency brake but many including the GT350 do not. They have a drum style parking brake built into the hub. It has nothing to do with the pads and nothing to do with the OP's problem.

 

[Trackaholic]

I had read this thread a while ago, and pretty much all the bases were covered so I didn't post initially.

However, just the other day I was driving my 350Z after it was parked in the rain for a couple days, and had a very similar experience when leaving the driveway. Brakes were locked pretty strongly (I've had the brakes bind after being wet before, but this time there was a pretty significant "crack" when they broke free).

Didn't think much of it, but as I was driving down a twisty road and lightly applying the brakes for balance, the left front wheel all of a sudden locked up. ABS and traction control activated immediately, but the car swerved several inches which was disconcerting due to the close proximity of the center divider. CODE BROWN!

After that incident I thought of this thread and decided that I had better burnish the brakes a bit during the remainder of my commute. I think some of the other drivers thought I was strange, accelerating then braking, then accelerating, then braking (can't really do a full burnish during a commute, but 70-50 a several times is easily possible when there are breaks in traffic).

Point is, I would recommend burnishing the brakes just to make sure the friction surfaces are nicely bedded once again.

-T

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