Car stutters braking at high speeds

Minsu · 04-14-2014, 02:08 PM

So yea if in going like above 70 and brake normally my wheel stutters. Is this normal? Is it a warped rotor, alignment? Any ideas?

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osbornsm · 04-14-2014, 03:04 PM

Okay you have a couple choices.

1. Warped Rotors = Only an issue if you race your car
2. Pad deposits = Totally possible
3. Alignment = Only an issue if it happens ALL the time. Not just under braking.

ElVee · 04-14-2014, 03:07 PM

Not trying to bump in, but what causes pad deposits?

Oh, hey, hi there! Fix brake vibration by braking really hard to remove pad deposits?

Minsu · 04-14-2014, 03:08 PM

That was my follow up question lol

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Eagle · 04-14-2014, 03:22 PM

Most likely you were doing some very hard braking, stopped the car put your parking brake up or had your foot on the brake pedal for a long time while at a light or something.
This is enough to cause your pads to melt, which creates excessive "pad deposits" on your rotors. The absolute sure fire fix is to change your pads and resurface your rotors, doing some hard braking or a brake pad bedding procedure may or may not help.

It's highly unlikely you actually warped the rotor.

Jordo! · 04-14-2014, 04:52 PM

Either rotors need to be resurfaced or wheels need to be balanced.

Gregor12 · 04-15-2014, 12:44 AM

your front rotors are warped if the steering wheels shakes if you feel it in your butt and feet your rears may also be warped. it does take much to warp the stock rotors

Minsu · 04-15-2014, 11:32 AM

Wait so my steering wheel shakes. so my front rotors are warped!?
Why though? I dont see a reason for it to be warped. its been cold as balls.

TreeSemdyZee · 04-15-2014, 12:43 PM

Quote:

Originally Posted by Gregor12

your front rotors are warped if the steering wheels shakes if you feel it in your butt and feet your rears may also be warped. it does take much to warp the stock rotors

Very untrue. You realize the stock rotors are cast iron right. It takes a crap load of heat to warp them.
What most people feel in rotor shake are deposits, not warpage.
"Warped" rotor replacement is the most over-sold fix that shops do.

Chuck33079 · 04-15-2014, 12:46 PM

Quote:

Originally Posted by Minsu

Wait so my steering wheel shakes. so my front rotors are warped!?
Why though? I dont see a reason for it to be warped. its been cold as balls.

It's pad deposits from holding the brake at red lights most likely.

Mike · 04-15-2014, 08:59 PM

Quote:

Originally Posted by Eagle

Most likely you were doing some very hard braking, stopped the car put your parking brake up or had your foot on the brake pedal for a long time while at a light or something.
This is enough to cause your pads to melt, which creates excessive "pad deposits" on your rotors. The absolute sure fire fix is to change your pads and resurface your rotors, doing some hard braking or a brake pad bedding procedure may or may not help.

It's highly unlikely you actually warped the rotor.

Parking brake has nothing to do with it. Parking brake is a separate drum brake. But it most likely is pad deposits on the front rotors.

Gregor12 · 04-16-2014, 01:07 AM

Quote:

Originally Posted by TreeSemdyZee

Very untrue. You realize the stock rotors are cast iron right. It takes a crap load of heat to warp them.
What most people feel in rotor shake are deposits, not warpage.
"Warped" rotor replacement is the most over-sold fix that shops do.

I stand corrected i guess lol my rotors have 30k miles on them. 10k from me, 20k from previous owner. I can feel it shaking even all the way down to 0mph and it shakes bad at high speeds. you think its just pad deposits? whenever i warped the rotors on my wrx tracking they did the same thing thats why i figured this was the same. and the butt/feet vs pedal and steering wheel is not untrue

Gregor12 · 04-16-2014, 01:15 AM

Quote:

Originally Posted by Minsu

Wait so my steering wheel shakes. so my front rotors are warped!?
Why though? I dont see a reason for it to be warped. its been cold as balls.

i would personally get a scotch bright bad and rubbing alcohol or a rotor hone and clean your rotors to see if that fixes it. also, you can still warp your rotors when its cold. i think i warped mine from braking hard at 120 because I thought a broken down charger was an unmarked police car. i know you're never supposed to brake heavily at those speeds but it was just my reaction. ever since then my rotors shake a little and its been months. although they are 14 inch iron cast rotors i still feel that there is a chanced that i warped them after some mess ups lol

Minsu · 04-16-2014, 01:16 AM

Hmm I do occasionally break from 140 but it's not abrubt by any means

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Gregor12 · 04-16-2014, 01:26 AM

Quote:

Originally Posted by Minsu

Hmm I do occasionally break from 140 but it's not abrubt by any means

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here man, read this article. we both might have pad deposits lol There's no such thing as 'warped' brake rotors - Orlando Autos | Examiner.com

04-14-2014, 02:08 PM	#1 (permalink)
Minsu A True Z Fanatic Join Date: Jul 2012 Location: New Jersey Posts: 1,401 Drives: 2013 MidBlue 370Z 6M Rep Power: 24	Car stutters braking at high speeds So yea if in going like above 70 and brake normally my wheel stutters. Is this normal? Is it a warped rotor, alignment? Any ideas? Sent from my SM-N900V using Tapatalk __________________ I figured, Get High, Take the Test High, Get HIGH Scoes

04-14-2014, 03:04 PM	#2 (permalink)
osbornsm A True Z Fanatic Join Date: Jun 2011 Location: WHAT Posts: 2,551 Drives: 2018 Camaro SS 1LE Rep Power: 424	Okay you have a couple choices. 1. Warped Rotors = Only an issue if you race your car 2. Pad deposits = Totally possible 3. Alignment = Only an issue if it happens ALL the time. Not just under braking. __________________ 2018 Camaro SS 1LE (455hp) - 2011 Nissan 370z (333hp) - 2004 VW R32 (240hp) - 2000 Civic Si (160hp)

04-14-2014, 03:08 PM	#4 (permalink)
Minsu A True Z Fanatic Join Date: Jul 2012 Location: New Jersey Posts: 1,401 Drives: 2013 MidBlue 370Z 6M Rep Power: 24	That was my follow up question lol Sent from my SM-N900V using Tapatalk __________________ I figured, Get High, Take the Test High, Get HIGH Scoes

04-14-2014, 03:22 PM	#5 (permalink)
Eagle Track Member Join Date: Jan 2011 Location: South Orange County, CA Posts: 885 Drives: 2011 370z Red 6MT Rep Power: 10656	Most likely you were doing some very hard braking, stopped the car put your parking brake up or had your foot on the brake pedal for a long time while at a light or something. This is enough to cause your pads to melt, which creates excessive "pad deposits" on your rotors. The absolute sure fire fix is to change your pads and resurface your rotors, doing some hard braking or a brake pad bedding procedure may or may not help. It's highly unlikely you actually warped the rotor. __________________ nismo\| EVO-R High Wing \| *Stillen* Gen 3 CAI \| SEIBON TS Hood \| Z1 34 Row Oil Cooler \| VMR 810 Wheels \| Endless MX72 Pads \|*Sabelt* GT-140 Seat \|Fly1Motorsports RS1 Fenders \| Hotchkis Front Sway Bar \| Berk HFC \| Last edited by Eagle; 04-14-2014 at 03:25 PM.

04-14-2014, 04:52 PM	#6 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	Either rotors need to be resurfaced or wheels need to be balanced. __________________ Enjoy it. Destroy it.

04-14-2014, 03:07 PM	#3 (permalink)
ElVee Track Member Join Date: Mar 2013 Location: Iowa Posts: 750 Drives: 13 370z 7at t+s grey Rep Power: 16	Not trying to bump in, but what causes pad deposits? Oh, hey, hi there! Fix brake vibration by braking really hard to remove pad deposits?

04-15-2014, 12:44 AM	#7 (permalink)
Gregor12 Enthusiast Member Join Date: Oct 2013 Location: CHARLOTTE, NC Posts: 433 Drives: 2012 370z 6mt sport Rep Power: 12	your front rotors are warped if the steering wheels shakes if you feel it in your butt and feet your rears may also be warped. it does take much to warp the stock rotors

04-15-2014, 11:32 AM	#8 (permalink)
Minsu A True Z Fanatic Join Date: Jul 2012 Location: New Jersey Posts: 1,401 Drives: 2013 MidBlue 370Z 6M Rep Power: 24	Wait so my steering wheel shakes. so my front rotors are warped!? Why though? I dont see a reason for it to be warped. its been cold as balls. __________________ I figured, Get High, Take the Test High, Get HIGH Scoes

04-16-2014, 01:16 AM	#14 (permalink)
Minsu A True Z Fanatic Join Date: Jul 2012 Location: New Jersey Posts: 1,401 Drives: 2013 MidBlue 370Z 6M Rep Power: 24	Hmm I do occasionally break from 140 but it's not abrubt by any means Sent from my SM-N900V using Tapatalk __________________ I figured, Get High, Take the Test High, Get HIGH Scoes

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