Question about 2005 Ford F 250 Super Duty

1 Answer

Front brake rotor

One of my rotors is fine. the other is chewed up. i work in a machine shop. what is the min. thickness of the rotor if i turn it down?

Posted by on

  • Anonymous Mar 28, 2014

    minimum front rotor thickness



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 566 Answers

Hi from uk i assume the rotor/disc is scoured due to brake pads worne out ? here in uk it is not the practice to machine down/clean up discs because what you take off disc you forfeat the life of pads and you run possibility of the caliper piston nearing its travel if pads wear too low again and run risk of fluid leak/s also the thinner disc will heat up quicker resulting in brakes imbalance ? for your safety and others? renew both discs and pads have seen machined discs crack and literally plane away the new pads prematurely do the right thing?

Posted on Nov 18, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Minimum rotor thickness

I don't know the min thickness, but I have an outback just like yours and if there is a problem with uneven rotors it's usually cheaper and easier to buy aftermarket at NAPA auto or other supplier (shop around) and trash the old rotors. If the rotors can be turned then keep them for the next brake job and use them then. Outbacks are easy to do about 30 min a side rotor and pads after the wheel is off, just did mine.

Sep 03, 2014 | 2010 Subaru Outback

1 Answer

Minimum rotor thickness

ON most disc rotors the minimum thickness is cast into the body of the rotor and will read min thickness and a dimension. The dimension is also available in the workshop manuals and from the service department of your vehicle. Do not be surprised if you find that your dimensions are almost at do not machine limits as original rotors are not much thicker than the low limit.

Dec 26, 2013 | 2002 GMC Yukon XL

2 Answers

When I start slowing down the front tires start shaking after I apply the break. What is causing that ?

You have one or two warped front brake rotors.
Many things can cause warped rotors. Here are a few.
1) Braking quite a bit, causing the rotors to heat up, and then going through a mud puddle or water which will cause rapid cooling of the disc.
2) Rotors made in China, which sometimes will warp prematurely.
3) Rotors that have been "surfaced" (ground down) during a brake job beyond their recommended thickness.
4) Bad luck. ( re: Heaven knows)

3 Cures. (You ain't gonna believe this!)
a) Take the offending rotors off and hit them with a sledge hammer. This worked for me once. ( You frighten them to death.)
b) Take the car or rotors to a shop and see if they can "turn" them on a machine to true them up. This is the same machine that is used to "grind them down".
c) Replace them. I recommend no Chinese. (See above)

Jan 09, 2013 | 2001 Audi A6

1 Answer

What is minimum brake rotor thickness for the front and the rear?

All are different, on the back side of the brake rotor , will have a stamp with (MIN) and some number after it the will be the minimum spec thickness for the brake rotor.

Dec 02, 2010 | 2007 Chevrolet TrailBlazer SS

3 Answers

350z Rotors need to be cut at only 10K miles

Your rotors should be fine but it also depends on who turned the rotors and how they were done.Considering the dealer replaced the pads they probably used a metallic pad which have been known to be a noisy .Id suggest you have a repair shop resurface your rotors again and install some ceramic brake pads.

Jan 30, 2010 | 2005 Nissan 350Z

2 Answers

Car shimmies when appling brakes at over 40 mph

your brake rotors are warped, if your vehicle is equipped with rear drum brakes have them cleaned and adjusted to keep your front brakes from working too hard and becoming warped, also replacing the front rotors is better than resurfacing them because after bieng resurfaced they are thinner and are more prone to becoming warped again

Nov 24, 2009 | 1998 Chrysler Sebring

5 Answers

I have a nasty grinding in the front end of a 96 buick skylark that makes it sound like a train any ideas

brakes or wheel bearings, a shop should be able to diagnose one or the other, maybe both.

Sep 30, 2009 | 1996 Buick Skylark

2 Answers

Truck shakes severely when on the brakes

Your front brake rotors are warped. Remove them, see if they are turnable. (Metal brake lathe at auto repair shop, or auto machine shop)

The rotors have a minimum thickness. You cannot lathe them any thinner than this minimum thickness, or your safety will be at risk. (A reputable shop wouldn't even begin to ->Think about turning a rotor undersize. If they do this, and you are hurt, or killed, or someone else, they are liable!)

Your front brake rotors are like the shape of a thick disk, right? You have brake pads on both sides of this disk.

If the rotor is warped, you will have a thick edge on one side, and a thinner edge on the other side. (You're viewing the rotor from the edge)
As you apply your brakes the brake pads they squeeze against the rotor. They squeeze against the thinner edge, then suddenly the thick edge comes around.
This makes you brakes grab momentarily, then as the thin edge comes back around, the brakes let go.

Grab, let go, grab, let go. This is the teeth chattering stop effect, that occurs.

If the rotors can be turned, fine. If not, they will have to be replaced with new ones.

One more thing. As time goes by, this chattering effect when you are stopping, has put severe wear on your front end parts. You may have a bunch of front end parts that are badly worn. This is why it's imperative to have this problem fixed as soon as possible.

There is also the safety issue. What if you can't stop in time in an emergency situation? Either your life, and/or someone else's may be endangered.

Aug 23, 2009 | Dodge Ram 3500 Cars & Trucks

1 Answer

Brakes pulsate when stopping vehicle but I have 70% front brakes and 40% back brakes left.

Your brake rotors may be warped, which causes the pulsating you are experiencing. It's ok to drive it like this (although annoying), so if it is driving you crazy, you can have the rotors 'turned' (ground down to eliminate any high spots) or just replace them with new rotors. An automotive shop/parts store needs to measure the thickness of the rotors to determine if the rotors are thick enough to allow them to be turned. Check the price on new ones anyway, as sometimes the price difference is minimal.

Jul 09, 2009 | 1999 Buick Regal

Not finding what you are looking for?
Cars & Trucks Logo

101 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

81400 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

gerry bissi

Level 3 Expert

4376 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides