Brake Rotor Separation

Heard and felt something on the front left when I put on the brake - turned out the wheel hub had separated from the rotor disc - scary. Anyone else have that happen ? Be careful when U R buying rotors.

 

How bad were they rusted?

 

Pictures !

 

Just looked at the pictures - rust. I don't know how to post pics.

 

If you tell me how I'll give it a try - pics are on my phone.

 

4500 messages/ posts and you don't know how to post a picture here
Go to "upload a file" next to " post reply"

 

Looks like rust has been eating away at the shoulder joint for a while:



Anyway, the rotor was worn well past its replacement thickness, as evidenced by the large step at the edge of the swept area:

 

Interesting - guess I should do rotors when I do pads - there was plenty of meat on the pads. How did you do the arrow ? Thanks for the reply.

 

^With OEM pads and OEM rotors, usually the pads wear out well before the rotor does. As a result, the service manual is quite restrictive in allowable rotor wear. New rotor thickness is 28mm, while the minimum serviceable thickness is 26mm - so only 1mm of wear per side.

The image cropping and arrows are done with an external program, IrfanView in my case.

 

Probably not helped by New Jesery winters

 

U R Very Welcome Sir.

 

Scary how much rust we get. Some people buy used trucks from TX and bring them back to NJ - No rust in TX.

 

That's very interesting - I've never measure rotor thickness but I'll have to from now on. Thanks.

 

^You'll need a micrometer that can get around the wear ridge on the outer rim of the rotor, something like this:

 

Thanks for the IrfanView link - I'll have to get my 9 year old grandson to walk me thru it - that usually works for me. Appreciate it.

 

Thanks - I go to Harbor Freight all the time especially when there's a freebee .

 

If the rotors look like that I wonder what the frame looks like. Never seen that happen, but I have seen the pads separate from the metal backing plate because of rust.

 

Bizarre. Guessing they weren’t oem rotors?

I’ve seen the just rolled in YouTube videos where people wore the pads completely away and grinded the calipers into the rotors so badly you could see the rotors internal vents. But never a rotor failed like that.