Braking Issue.... Please Chime In

[Shift]

Also just remembered something. Performed an emergency stop to avoid an accident a couple weeks ago, pretty good surface though, but there was zero yaw. Any other car and I might be dead as a matter of fact. It was from 90 ish though.

Story time.

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[TDC]

Braking at the track from 140 down to 50 at about 1.3g caused a little bit of yaw but nothing alarming.

 

[xt6wagon]

Its in large part due to the fact the rear has almost no grip in very heavy braking. You have transferred almost all of the weight onto the front tires. Thus anything making the car want to yaw, will have little resistance at the rear.

The car I had at the driver school loved to wag a little if I tried to threshold brake. It would briefly lock one front wheel then the other. If you just stand on it and let the ABS work properly it brakes harder and wouldn't do the brief lockups. Really good ABS programming here.

Also the GT350 clearly has more brake than it has tire even with the 295 supersports. Would love to try a R to see if the stiffer front springs and extra tire make things as good as I expect.

 

[Trackaholic]

I've not noticed any sort of instability when on track or on the street (but I don't brake hard on the street).

I wonder if you should get your alignment checked to make sure nothing is funky there.

-T

 

[J-nod]

My 2013 Mazda Speed 3 does this under heavy braking at the track. 70-30 weight distribution with upgraded tires and brakes means there is almost no load on the rear wheels. The car usually wanders about a foot to one side or the other through a braking zone. The steering doesn't pull, so it isn't a front brake issue.

 

[Siggy550]

As long as we are talking braking, has anyone's really squeaked? Mine is almost embarrassing to drive as here I come in this bad ass looking car and suddenly when I hit the brakes, ear piercing squeals.

 

[nastang87xx]

Umm...........becauseracecar?

I don't get why people are so surprised by this. And even so, Hawk HP+'s and up, Carbotech AX6 and up, EBC Red Stuff...welcome to performance braking. They all squeal.

Mine are noisy as hell and I also bedded them in correctly.

 

[Hack]

As long as we are talking braking, has anyone's really squeaked? Mine is almost embarrassing to drive as here I come in this bad ass looking car and suddenly when I hit the brakes, ear piercing squeals.

Mine squeaked a little on occasion when they were new and had never been used hard. They do it a little less now, but there's still some noise from time to time.

 

[Siggy550]

Umm...........becauseracecar?

I don't get why people are so surprised by this. And even so, Hawk HP+'s and up, Carbotech AX6 and up, EBC Red Stuff...welcome to performance braking. They all squeal.

This is my first car at this level of performance. I've owned nothing but GTs prior. If this is normal, just needed to know. My GTPP with Brembo 6-piston, 15" package didn't do this. Thanks for response.

 

[superman07]

I had squeaking once after a car wash, washed the wheels when I got home with cold water, problem was solved. Zero noise after so far.

 

[nastang87xx]

This is my first car at this level of performance. I've owned nothing but GTs prior. If this is normal, just needed to know. My GTPP with Brembo 6-piston, 15" package didn't do this. Thanks for response.

Ah in that case then yeah. You'll just have to get used to it. The pads are the biggest deal and the 15" 6 pot Bo's on the GT are very much made for the every day man. Easy on the rotors, quiet, etc. The main benefit for having a big disk and many pots is to more evenly distribute braking energy and to soak up heat. Bigger brakes won't always mean harder stopping power. The pump, brake lines, and the pads will be the dictator of that measurement.

 

[xt6wagon]

Ah in that case then yeah. You'll just have to get used to it. The pads are the biggest deal and the 15" 6 pot Bo's on the GT are very much made for the every day man. Easy on the rotors, quiet, etc. The main benefit for having a big disk and many pots is to more evenly distribute braking energy and to soak up heat. Bigger brakes won't always mean harder stopping power. The pump, brake lines, and the pads will be the dictator of that measurement.

Um, mine squeaked briefly, but that was like 6,500 miles ago, and nothing since.

None of the ones at the school squeaked that I heard either.

I think you got something stuck in a pad.

 

[jasonstang]

What happens is when you brake, the camber also increases on the front.

 

[JeremyGSU]

With Continental GTI slicks on the track and Carbotech XP20/XP10's and an AP T1 12.8" front brake kit my C5 Z06 would do this on the track if I braked hard enough. I always thought it was because I had a front brake kit and stock rears and stronger pads than the rear.

Were you at angle kind of angle what so ever when this happened? I found that if my car wasn't absolutely straight when I began braking that it would amplify the rear swaying issue.

I would think a Mustang could do this even more than my Vette because of the additional weight being transferred to the front but others are saying they haven't experienced this. Were the brakes eased into and then quickly increased or just stabbed?

Perhaps a caliper is hanging up a bit?

I'll be curious to see if the dealer finds anything.

I'll be interested to see what

 

[nastang87xx]

Um, mine squeaked briefly, but that was like 6,500 miles ago, and nothing since.

None of the ones at the school squeaked that I heard either.

I think you got something stuck in a pad.

I inspected my pads after my racing event. Clean as a whistle. Squeaking brakes don't bother me especially when I know that I bedded them in correctly and that when they've got the required heat in them, bite harder than a shark. My brake performance is fantastic. And if you got something stuck in a pad, you'd know. It wouldn't be a squeak, it would be much worse.

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