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Old 06-10-2015, 12:52 PM   #1
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Brake Shuddering

Hey Guys,
Everytime I brake now there is a very noticle shudder/shaking while the car is coming to a stop. I had new pads and rotors installed on the front last year but never replaced the back as the technician told me he was going to break something if he tried to removed a cover to check them but that they rear ones dont wear as fast as the front so it shouldnt be a problem to leave them as is. However now I am pretty sure they are the culprit. I am going to another more reputable shop but what is most likely the cause of brake shuddering/shaking just so I am bit more educated when I take it in. Thanks in advance guys!


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Old 06-10-2015, 01:14 PM   #2
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Do you feel the shaking through the steering wheel or throughout the whole car? Front brakes will cause the vibration through the steering wheel and its usually the rotor that causes it...having just replaced your front rotors not long ago, i would think something else lead to them shuddering that shortly after a brake job.

How many miles on the rear brakes and how many are on the fronts?
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Old 06-10-2015, 01:31 PM   #3
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I notice the shaking through the steering wheel for sure, but it shakes the entire car. Hey I bought the car with 60k on it and probably replaced front around 100k and the back have never been touched since I've had it.
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Old 06-10-2015, 02:31 PM   #4
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What's the current mileage? With cheap or old rotors, excessive heat may have warped them and that causes what's known as brake pulse. Google that and you'll get all the information you ever dreamed of.

Toby
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Old 06-11-2015, 08:07 AM   #5
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Quote:
Originally Posted by Highball116 View Post
What's the current mileage? With cheap or old rotors, excessive heat may have warped them and that causes what's known as brake pulse. Google that and you'll get all the information you ever dreamed of.

Toby
yep thats what its sounding like to me.. riding the brakes too much or a couple nice hard braking at speed could do it, same for a hot rotor then getting quenched by a puddle.

Corbeil - I like centric's premium rotors up front, its a solid disc and is a quality part. At over 100k it might be time to get the rear drums done too
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Old 06-11-2015, 08:40 AM   #6
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Warped rotors highly unlikely. More likely a hub with excess runout and is causing wobble and excess pad deposits building up on the rotor in the high spots as the rotor turns. Will need to resurface the rotors to correct but also check hub runout with a gauge. If in excess of spec will need to use a shim or replace the hub altogether. If you do not do this you will have the same problem over and over again.
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Old 06-11-2015, 08:42 PM   #7
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So many possibilities,

A look at the rotors & pads would tell a lot.

Up north (he's in Canada) occasional use can result in rust issues fast, just park anywhere there's salt in the air for a week & the brakes won't even turn. Permanent thumping to some degree until they're fixed again.
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Old 06-18-2015, 01:16 PM   #8
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Quote:
Originally Posted by Corbeil View Post
Hey Guys,
Everytime I brake now there is a very noticle shudder/shaking while the car is coming to a stop. I had new pads and rotors installed on the front last year but never replaced the back as the technician told me he was going to break something if he tried to removed a cover to check them but that they rear ones dont wear as fast as the front so it shouldnt be a problem to leave them as is. However now I am pretty sure they are the culprit. I am going to another more reputable shop but what is most likely the cause of brake shuddering/shaking just so I am bit more educated when I take it in. Thanks in advance guys!

First thing I'd do is fire your mechanic. He's an idiot. Drums are easy for even the least trained person. Takes 2 brain cells to rub together and I dont think he has them.

My rear shoes (shoes for a drum brake system, pads for a caliper style system) are about 5-6/32. My car has @136k miles, so you probably do have decent pad material still, unless you like that e-brake sliding action.



I'd say most likely its warped rotors. I'm finding that the front caliper design appears to have the front brakes wear poorly (most noticeable on the inside of the rotor near the hub) and have put out a post to see if anyone else has seen this. I've found it 3 times now.

How many miles since your front brake job and what parts were used? My car shakes its butt off (well, nose) with a "performance" power stop brake kit, which I do not recommend to anyone
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Old 06-18-2015, 04:14 PM   #9
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Brakes should be smooth and steady, performance or OE makes no difference. If your car is shaking when you are applying the brakes there is a problem, period. If mechanic hasn't verified the rotating assembly is running true you will continue to have problems even after replacing rotors, calipers, pads. Never seen a warped rotor but have seen plenty with uneven pad deposits.
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Old 06-18-2015, 11:48 PM   #10
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Quote:
Originally Posted by Gettysburg150 View Post



I'd say most likely its warped rotors. I'm finding that the front caliper design appears to have the front brakes wear poorly (most noticeable on the inside of the rotor near the hub) and have put out a post to see if anyone else has seen this. I've found it 3 times now.

How many miles since your front brake job and what parts were used? My car shakes its butt off (well, nose) with a "performance" power stop brake kit, which I do not recommend to anyone
For the umpteenth time.

-Warped- Brake Disc and Other Myths

That is, unless you broke out the dial indicator before jumping to the warped rotor conclusion.
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