I have a 2005 Ford F150 2wd I had bad vibration everytime I would brake. I had the rotors and brake pads changed and it seemed to fix the problem. It doesn't shake anymore when braking at slower speeds, but if I'm doing over 50 mph it will shake every time I touch the brakes. Does anyone know of something else that could be causing this to happen?

 

According to my local machine shop dude it is not uncommon for new brake rotors to have run-out or not to be as flat as the manufacturer claims. He advises customers that are buying new rotors to have them turned before installing them. I first thought of this practice as an easy way for the dude to make some extra money, but experienced the same problem you have after replacing the rotors on my F250 4WD. I did not experience any vibration prior to replacing them(just worn out) but I could have sold my front end as a sextoy for the ladies after installing the new rotors. The box claimed that they were ready to install and had beautiful cross hatch marks on the braking surface. I did learn however the proper procedure of taking my front hub assembly apart(courtesy of 4WD) Long story short. I would not be the least surprised to find out that your new rotors are simply not within spec. and need to be turned.

 

You should not have to ever turn new rotors , if they are truly bad they need to be REturned , not turned , I get my rotors from autozone , and have never had the slightest problem with them.

By the way , rotors on a 4wd are different than yours.

I assume you had a mechanic do the work ? If so take it back , might just need to be bedded in.

 

I used to think the same way until a friend who owns a brake shop told me it's not uncommon to have brand new rotors (any brand, including customers who provide their own rotors) needing to be turned.

Then it happened to me 2 years ago. After 20 years of doing my own brakes, I bolted on a set of new rotors and had brake pedal shimmy when I went to bed the new pads. I pulled the new rotors and took them to my buddy's shop and he turned them for me.

Stewart

 

Why not just take them back where you bought them , and exchange them ?

They were obviously defective , right ?

 

Cryo treated rotors purchased online.

I woulda, but it was just easier to get them turned.

Stewart

 

Worn out brake hardware...Had all the same problems and once I changed hardware all was/is good.

 

rear brakes not adjusted properly will cause a vibration

 

??? How do you "adjust" rear disc brakes ?

 

He's taking about the emergency brake I think.

 

leaving the e brake "on",,,,will cause a heck of a shake , but it is more normal for them to be loose than to be too tight,...

 

Yes the emergency break may cause it sorry for confusion