Crack in my brake rotor

[GTSnake]

Found a hairline crack in the drivers rear brake rotor yesterday. It was about 1/4" long and very faint. I didn't think anything of it until today when I looked at it again. Now it's grown to about 3/4" of an inch and a little wider.

Is this something to be concerned with? If I have to change it am I going to need to change both rears? All 4?

 

[TAXIMAN1]

change them all out.... Rotors (expecially stock ones) aren't too expensive.. If you sig is accurate @ 1300 RWHP... I'd say your brakes and you SHOULD be on very friendly terms. They probably overheated and caused the crack OR have been machined 1-2 times before, and are too thin anyway..

 

[GTSnake]

They're actually fairly new. They have less than 10k miles on them. I'll have to go measure the thickness.

 

[99 R/T 10]

Hey Tom, are they drilled rotors?

 

[GTSnake]

Hey Tom, are they drilled rotors?

Nope, just slotted.

 

[dave6666]

They're actually fairly new. They have less than 10k miles on them.

Bought on ebay?

 

[GTSnake]

Bought on ebay?

I can't remember exactly. They're probably 3-4 yrs old. I know, I live in Mi so I only drive 6 months in a year...

 

[dave6666]

I can't remember exactly. They're probably 3-4 yrs old. I know, I live in Mi so I only drive 6 months in a year...

The reason I asked is, that I've never been an advocate of buying the critical parts, ie those that help you stop, from a vendor like ebay that has 2 selling points they grab you with:

-> Low price.

-> Bling bling bling bling. Look at those slots & holes boys and girls! Are you licking your chops yet???

It's one thing to have to call a tow truck because your ebay pistons melted and your engine has seized, but when your brakes fail there might be additional emergency vehicles involved.

I would personally only buy OE, or the brand name$ that can be found around the forum when it comes to parts that make you go stop.

ebay floor mats... Yes.

ebay brake parts... No.

 

[DrumrBoy]

I second that. I've purchased cheap rotors before, just to try 'em out and most of the eBay crap comes from Chinese/Taiwanese foundries and the metallurgy just aint right....whether its the amount oof carbon added to the iron or the subsequent heat treating, they simply ****...warping, cracking and quick-wearing.

Go with brand names, OEMs are pretty inexpensive anyhow.