Rotor/Brake Pad Wear Opinions

[stikx]

talking about supra TT brakes here, my other brother is in the market of one and they talked about machining brakes in one of the ads, which isnt talked about on here, which i now know why. thank you all.

[unreal808]

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[stikx]

lol i know that TLC

[john]

Usually the rotors need to be machined if there is runout on them. This is sometimes easy to detect when driving a car as the brakes will seem to shudder as the rotor is not as thick all the way around. If the rotors are off, measure them with a micrometer (assuming disk brakes) at several different points to see if runout is present (numbers are not equal). As stated above, turning (or machining) the rotors is the most economically sound option as it only costs $10/rotor at checker. There is no need to replace them unless they are under the minimum thickness spec. Checker can measure them and check them if you have no idea what you are doing at all. They would then sell you new rotors of turn them.

[MATCHBX]

The only reason why most people don't have them turned much anymore is because most people don't have another vehicle to use while the other car is down waiting for the rotors to be machined.

Rotors are getting to be so cheap now that it is easier to just buy new ones. It's mostly a matter of personal opinion as to what you do. It basically depends on what the circumstances are at the time as to which road I take.

[Swifty1638]

IF you have the time to sit around, you can go to tires plus, or any place like that. They have a lathe that will cut your rotors for ya. Also, you can turn, and measure thickness on drum rotors. My old job had a machine for that too( usually, they are both as one big machine-disks, and drums) the micrometer was a little different, and it measures the inside if the drum. Take the measurement at different points, and you can usually tell if they are good or not.

-A. Swift

[JET]

Usually the rotors need to be machined if there is runout on them. This is sometimes easy to detect when driving a car as the brakes will seem to shudder as the rotor is not as thick all the way around. If the rotors are off, measure them with a micrometer (assuming disk brakes) at several different points to see if runout is present (numbers are not equal). As stated above, turning (or machining) the rotors is the most economically sound option as it only costs $10/rotor at checker. There is no need to replace them unless they are under the minimum thickness spec. Checker can measure them and check them if you have no idea what you are doing at all. They would then sell you new rotors of turn them.
Once again, this is wrong. Runout is not from the brakes being a different thickness. Runout is from a warped rotor. A rotor can be warped and still be the same thickness all the way around. Acutually they usually are. Runout is measured by putting a dial indicator on the brake caliper and putting the measuring end on the rotor, and then spinning the rotor. The difference between the high and low reading is the amount of runout. Then you need to do the same on the other side of the rotor. Add those 2 measurements together. Measure the thickness of the rotor, then subtract the 2 measurements from it. If that is still above the minimum thickness, then you can turn it down. If it is lower than the minimum thickness (more than likely) then you cannot turn it down.

[john]

I call it all the same. That is the term they preached in school. You can check a rotor with a micrometer. You do not NEED to spin it. I had the dumb class at HTC when I was in HS two years ago. I learned the basics not that there is too much to brakes...

I do not know why anyone would replace them if they didn't have to but to each their own. It seems like pissing money away to me. A turned rotor is going to be just as good as new. It only takes about an hour if you drop them off at checker. If you have no idea how to check them, checker can do it along with turn them or replace them for you. I have only had to replace rotors in my old neon. Every other car I have done were fine with turning only.

[A//// Guy]

Sure you can turn the rotor a couple times but everytime you do you take away material and it will warp faster. Getting aftermarket ones that are good quality is the best bet if your buying new. Otherwise turn them until you cant anymore becuase they get to thin and out of spec.

[JET]

Alright, why do you always have to argue things when you are wrong?? Be a man and say "my bad". I don't care if "you call it all the same". This is about what is right, not what you think. This is a tech thread that can be searched. Wrong answers should not be posted!

There are 2 ways to check a rotor for runout. The only easy way is to spin the rotor with a dial indicator. When it costs $23 for a new rotor, it is easier to buy new ones. Also, a previously warped rotor is not as good as a new one. It will, more that likely, warp again soon on a DSM.