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Steering Wheel Vibrates When Braking

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Old Jul 31, 2017 | 11:05 AM
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Steering Wheel Vibrates When Braking

Hi Guys, The title says it all. Thinking we need rotor machining or new front rotors. Read the tech thread post about cementite.

We have the 6.8 4x4 2001. Mostly use it for towing 6K #. Bought 2 years ago. Front and rear brakes were new and all 4 rotors were machined at Ford dealership prior to purchase. Have put on 13,000 miles since then, majority towing.

Taking in today to get taken care of. Please give me the short answer of what we probably need. If new brakes rotors what brand do most of you use?

Thanks!

CM
 
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Old Jul 31, 2017 | 11:20 AM
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Really sounds like warped rotor(s). If you don't know how fresh they are, I would just throw a new set on the front. I've always had really good luck with Centric brand brake products and would highly recommend them for rebuilt calipers, rotors, lines, and hardware.
 
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Old Jul 31, 2017 | 11:23 AM
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It's a common misconception that rotors warp. I believed it myself for years. That vibration you feel are cementite deposits on the rotors. Cementite is a compound creating by the intense heat and pressure of braking. Some people call them hot spots and you can see them on the face of the rotor. You cannot machine the problem away. You have to get new rotors. Many people have many different opinions on what brand of rotor they prefer, but the cheap ones just don't seem to work well on these trucks. These are the ones I have on my truck. No vibration at all so far.

Amazon Amazon
 
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Old Jul 31, 2017 | 11:37 AM
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Thanks. Shop wants to use Motorcraft or AC Delco. Weigh in please.
 
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Old Jul 31, 2017 | 11:40 AM
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I'll take MC over AC Delco any day of the week.
 
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Old Jul 31, 2017 | 11:47 AM
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Motorcraft is a better part, but you will pay through the nose for them.

My answer is neither.
 
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Old Jul 31, 2017 | 11:51 AM
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Originally Posted by andym
Motorcraft is a better part, but you will pay through the nose for them.

My answer is neither.
I saw ones on Amazon you posted but since I'm not doing myself many shops use what they use don't they? They don't usually use customer supplied parts. Need done this week since next weekend we are camping in mountains. Don't want to drive down mountain towing without tip top brakes.

P.s. Are brake pads usually replaced at same time as rotors?
 
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Old Jul 31, 2017 | 11:54 AM
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As cheap as pads are, no reason not to replace them when putting fresh rotors on...
 
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Old Jul 31, 2017 | 12:31 PM
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Originally Posted by Country_Mouse
I saw ones on Amazon you posted but since I'm not doing myself many shops use what they use don't they? They don't usually use customer supplied parts. Need done this week since next weekend we are camping in mountains. Don't want to drive down mountain towing without tip top brakes.
If you're going to pay someone else to do it, then you're mostly stuck with whatever they want to use. Shops HATE customers that bring their own parts in because they want to sell you their marked-up parts.

This is another reason why I do almost all of my own work. There are no cheap replacement parts on my truck, I can attest to that.

P.s. Are brake pads usually replaced at same time as rotors?
Almost always. However I think it would be pretty rare for a shop to change the rotors and put the old pads back on. That would require a pretty special set of circumstances. There can be a lot of liability issues depending on the state and many shops would never even consider it.
 
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Old Jul 31, 2017 | 12:33 PM
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Originally Posted by Romanova
As cheap as pads are, no reason not to replace them when putting fresh rotors on...
I don't use cheap pads, but then again I like my truck to stop when I want it to. The pads on mine are about $80 an axle. Not exactly cheap enough to throw in the garbage just for the sake of changing them while you're in there.
 
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Old Aug 2, 2017 | 01:35 PM
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Different shop quoted me much more reasonable price on new brakes and rotors plus steering damper (from other thread) and installing bumpstops.

He wants to use Akebono pads and rotors. Yay or nay?
 
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Old Aug 2, 2017 | 01:39 PM
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Also, Ford said pads at 7mm. Should we replace them at same time as rotors or ok to deglaze them?
 
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Old Aug 2, 2017 | 01:52 PM
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I would replace them.

it might seem like a waste of money if your pads aren't completely worn down, but the piece of mind is well worth it I think.
 
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Old Aug 2, 2017 | 02:10 PM
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If they're perfectly flat and at 75% or more, I would probably re-use them. But all four pads would have to be in good shape.
 
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Old Aug 2, 2017 | 02:21 PM
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Originally Posted by andym
If they're perfectly flat and at 75% or more, I would probably re-use them. But all four pads would have to be in good shape.
Thanks, they said deposits so they recommended deglazing. Does that mean they're not perfectly flat?
 
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