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Brake Upgrade

Messages
6
Reactions
5
Location
Nashville, TN, USA
#1
I did a search and not much popped up about a full brake upgrade. Rotors, calipers, and pads. I have the Street pack and I pushed the ST on the Tail of the Dragon this past weekend and noticed some brake fade. I’ve never had a car I could push that hard before so maybe it’s normal. I had so much fun but slowed it down after I noticed the brakes fading a little. I don’t think just upgrading to the Track Pack brakes is enough. By the way, the ST is amazing in the corners and I’m impressed with the Pirelli Scorpions! Lots of grip and only squealed if I hit the lines while the cars behind me were squealing like crazy.
 
Messages
86
Reactions
41
Location
NJ
#2
Brake fade is usually caused by the stock rubber lines, so maybe all you need is a set of braided brake lines and new fluid/bleed job.

Unsure if anyone makes braided lines yet for this vehicle.
 

UNBROKEN

Active Member
Messages
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961
Location
Houston, TX, USA
#3
Rotora is working on a BBK and Centric/StopTech is working on some rotor and pad upgrades but nothing it out yet. Braided stainless hoses will improve pedal feel but won’t stop fade.
 
Messages
86
Reactions
41
Location
NJ
#4
Rotora is working on a BBK and Centric/StopTech is working on some rotor and pad upgrades but nothing it out yet. Braided stainless hoses will improve pedal feel but won’t stop fade.
The stock rubber lines will expand over repeated hard braking, which is one of the main causes of brake fade. Braided SS lines won't let that happen. Of course there is fluid fade as well, which is why I also recommended changing fluid and bleeding the brakes.

When I used to race cars/bikes, I ran stock rotors and calipers, but always changed to SS lines and better fluid, and depending on what class I was racing in, I might change pads, but not always.
 

DoingOK

Member
U.S. Navy Veteran
Messages
125
Reactions
135
Location
Smithfield, Virginia, USA
#6
Your biggest culprit was most likely the brake pads overheating and not allowing the heat to dissipate with this 4700+ lb vehicle. Boiling of the brake fluid could also be a factor depending on how much heat was generated.
 
Messages
6
Reactions
5
Location
Nashville, TN, USA
#7
Your biggest culprit was most likely the brake pads overheating and not allowing the heat to dissipate with this 4700+ lb vehicle. Boiling of the brake fluid could also be a factor depending on how much heat was generated.
She is a thicc lady lol! I thought that’s probably what it is bc a big girl probably shouldn’t be driven like that but it was so fun. Now my left front brake is grabbing and pulling to the left. I’ll get those pads changed ASAP and have the rotors looked at. My husband and son can work on the brakes. I figured with as hard as we drive them at the ST Experience and with how well she handles that the brakes would be up to par. I have a lot to learn still! I learned I can’t keep up with the Porche and Mustang 5.0 in front of me.
 

Billj747

New Member
Messages
4
Reactions
1
Location
West Palm Beach, FL, USA
#8
It doesn't surprise me the base brakes didn't hold up to the dragon. The brake upgrade has larger rotors and more aggressive pads that hold up to mild track use, so they should be fine for the dragon. First I would upgrade the pads to the high performance OEM ones.

Rubber brake lines do expand and ss lines will give you a harder pedal, but that has zero effect on boiling fluid and causing the pedal to go to the floor, or prevent them from fading which is caused by the pad from getting too hot.
 

dragon434

New Member
Messages
4
Reactions
3
Location
NYC, NY, USA
#11
Man I wish I got the street package.
I didnt feel like waiting and ended up getting the base st with the technology package.

Can I pay the dealer to upgrade to the street package? Or can i order the components and take it to a shop to install.
 
Messages
37
Reactions
13
Location
Airizona
#12
Man I wish I got the street package.
I didnt feel like waiting and ended up getting the base st with the technology package.

Can I pay the dealer to upgrade to the street package? Or can i order the components and take it to a shop to install.
You could price it out, but being after the fact it might be cheaper to go with an aftermarket system that is larger. You'd really just need to price rotors and calipers for the brakes.
 

dragon434

New Member
Messages
4
Reactions
3
Location
NYC, NY, USA
#13
You could price it out, but being after the fact it might be cheaper to go with an aftermarket system that is larger. You'd really just need to price rotors and calipers for the brakes.[/QUO
what’s different with the street pack rotors?
I read that its vented rotors but mine looks vented already. Is it larger in diameter also?

edit

on closer inspection the front is vented but the rear rotors are solid,
 

UNBROKEN

Active Member
Messages
966
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961
Location
Houston, TX, USA
#14
what’s different with the street pack rotors?
I read that its vented rotors but mine looks vented already. Is it larger in diameter also?
Larger front and rear and vented front and rear. Calipers are larger as well.
Your rear rotors are solid.
 
Last edited:
Messages
37
Reactions
13
Location
Airizona
#16
ahhh
im trying to order the upgraded ones on the ford parts website but its so confusing
I would try just going to other parts places and ordering replacements for the ST with the brake package. That should give you the larger rotor sizes and all.
 
Messages
87
Reactions
86
Location
Utah
#17
Gotta say I wondering about the caliper/caliper mount bracket differences since you’re moving to a larger rotor.
 


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