just wondering if I'll be in a set of rotors when I replace the pads for the first time this week or if they should still be thick enough to turn at least once. They seem fine I'm replacing the pads b/c they are squeeking and putting off tons of brake dust. The car is female driven and 38K miles.

thanks

 

Usually you can only turn them once.

then they become too thin and overheat too fast and you get vibration.

plus shops will not turn them for you if they are out of specs.

And if you don't turn them when you replacing pads then you just waisting your pads.

 

perfect thanks

 

Why do you have to turn them of they arent' out of run out spec? Why would it be a "waisting (wasting) your pads" if you don't?

 

cuz there are groves from previous pad on the rotor and you'll be shaving your pad off till it fits those groves

You get new pad with flat surface. Turn your rotor to have a flat surface also.

 

On what basis does that "waste" the pads? Unless there are severe gouges in the rotors, you don't have to turn them. While it's nice that you do, I wouldn't ask the place to "turn" them. As they just take the same amount of material off whether they need them or not. Would be better to find a place that can machine just enough to get them flat which should be less material than a stand "turn" job. If one decides they actually need this.

I just did a pad replacement on my car the last time. No turning. Works/operates fine. But they didn't have any deep gouges either.

 

there are no diff stages of turning/machining your rotors.

every shop does it the same way.

And it IS IMPORTANT to turn your rotors every time you change your pads.

You will not notice much diff between old pads old rotors and new pads old rotors.

But you will notice a diff between old pads old rotors and new pads turned rotors.

And your braking will become worse and worse with old/not turned rotors.

 

^ +1 every time you get new pads you should have the rotors turned. just like JOKER said, if you don't you'll cause issues w/ ur pads and how they wear

 

I've done this numerous times w/o any issues or problems.

What issues are you referring to? Exactly? in Technical terms?

 

If you go to a brake place yes. That's why I mention a machine shop.

AExactly why? Techically?

okay

Why? In technical terms, why would there be such a great diff?

Mine hasn't.

 

You should only turn rotors if they NEED to be turned. This can be checked with a runout gauge. If they check out fine and you didn't take your last pads down to the backing plate, the grooves from the previous pads are going to be no worse than the grooves from turning. Have you ever looked at a rotor turning lathe? It turns the rotor by using a pointed wedge. To compound the problem, most places take off too much material in a single pass making the grooves worse than before the turning. It does however make the rotor flat which is more important. All pad/rotor combos need to be broken in regardless if the pads have been turned or not so that the rotor pad interface matches.

 

Do you think that only your pads wear out?
Do you think that your rotors stay exactly the same as they were when they were new?

 

If that's the logic you want to adhere to, then you should be advocating replacements for both.

 

^Answer the Q

 

Sure. But I do believe I've asked you a series a questions you have yet to reply to. First things first right?