morris

What do you guys think, I didn't think they were that bad but after taking the photos I am beginning to think they are done or pretty close to done.

troyguitar

Those are fine.

ErnieN85

not yet

froggy47

Still ok.

morris

Thanks I appreciate it its always good to have a second opinion other than my own.

dvandentop

good for probably another track day have a spare on hand since sometimes the cracks can get bigger after only a few sessions.

CP Thunder

Dont worry about cracking unless it gets all the way to the edge and you can see it on the flat edge of the rotor (non surface area) . Then you know its all the way through that side of the rotor half.

Joy of 6

Those cracks are normal. One test you can do is see if your fingernail catches. Then it will be done. I always wait until the crack goes all the way to the outside edge. I think they crack mostly on the outside, but when you change tires always look on the inside of the rotor

morris

Thanks everyone that's exactly what I needed. I was thinking about the cracks touching one another, I didn't think about them reaching the edge that is very helpful information. I broke down and spent $700 on a new set but they take two weeks for PFC to make. I won't use them before I have too but at least I will have them when I need them.

Bill Dearborn

Look into the vents from the outside edge of the rotor and make sure the face portions of the rotor aren't separating from the vent bars. I had a set of Coleman Heavy Duty rotors do that on me. I was getting one hell of a thumping under braking but the face of the rotors looked better than your pictures. Have only had one set ever crack that way but I always check to make sure it doesn't happen again.

Bill

2 GTOs

still good but get the replacements ready.....

0Anthony @ LGMotorsports

95% of the time the crack is going to appear on the outside of the rotor, and yes what he said about the crack going to the edge is going to be the most important.

In a few rare cases I have seen them crack worse on the inside so from time to time take a look there too.