new pads = new rotors? A rule?

[FrayAdjacent]

Originally Posted by bmussatti

WOW! In over 153,000 posts on this Forum, the actual word "vernier" has only been used 5 times.

All by the same person!

Jim. (aka MNBoxster...aka Lil bastard)

1- by Lil bastard
4- by MNBoxster

When are you going to come out of the closet, Jim?

Probably because most people can't read a vernier scale. I had to learn when I picked up a Sharps type rifle with a long range sight setup on it. Minute of Angle on a vernier scale.


On topic -

I replaced my brake pads shortly after purchasing my car. Had 40k on the ticker, and the front pads were almost on the wear sensors. I did not replace my rotors nor did I have them turned. My brakes are fine, except for a little squeak here and there.

When I get closer to 80k and need to change the pads again, I will get new rotors.

It can't hurt anything but your wallet to change them prematurely.

[jmatta]

If you have base Box rotors, I think you're OK just to change pads, as the others have said. I wouldn't waste my time on having them turned, as new rotors are relatively inexpensive unless you feel pulsing indicating a warp. Box S has cross drilled; no turning, but look for spider cracks. The street is not hard on brakes at all and your factory rotors should give you long life. I prefer to change pads when they hit the halfway point, as they are cheap and a thicker pad keeps the heat out of the caliper.

NEVER mix pads on a track or DE car...the differences in grip will be exaggerated and the car will most likely be either off track or heading the wrong direction.

[Rick V]

Ok I wrench for a living so I will give you the work answer then I will give you the way I do my cars.
As many have stated you can "mic" the rotors and see what you have left. If you figure the amount of wear you inflicted on the rotors and that number is less than half of the wear, (from origional to min. thickness) keep your rotors and change them with the next set. If you don't have any pulsations when braking you shouldn't need to resurface them.
On My cars, I change the rotors every time I change the pads. I do this for several reasons,
1 I am very hard ( And I do mean very) on my brakes, I love to set the car late on entry, and drive alot of country roads
2 I run Hawk HP+ pads. They will kill a rotor.

[RandallNeighbour]

My factory rotors lasted 100k for what it's worth.

[FTD]

Thanks for all the info. Very helpful. I will replace the fronts with OEM, since the rears are OEM. I do track, but not often [enough]. I wanted to try some street/track pads but I don't need a squirrely rear on hard braking. The DIY on Mike Focke's link is sooooo well written, I will let you know how it goes for me.

[FTD]

Oh.....
and I also wanted to say

Vernier

[JackG]

Originally Posted by FrayAdjacent

Probably because most people can't read a vernier scale. I had to learn when I picked up a Sharps type rifle with a long range sight setup on it. Minute of Angle on a vernier scale.

My dad, a machinist, taught me how to read vernier calipers when I was less than ten years old. I still don't have set of dial indicating calipers... mine is an old, but trusty Fowler vernier caliper.

There... I used the word "vernier" twice, err, three times.

[FTD]

One more question [I hope its the last one]
Can I use the PBR Metal Master pads on the front with OEM on the rear. Or is this too much a move away from similar compound? It has been referred to as an OEM-like pad.

[FTD]

bump bump

[Rick V]

JMO
You can run the metalmasters with the OEM stuff, but I would run the Hawk HPS pads.
They stop better than OEM but arn't an overkill. Also very low dust, no noise, and heat isn't an issue for them.
I realy like the Hawk line, just get the ones that are best for your driving, or you won't like them.

[dmcutter]

"All by the same person!

Jim. (aka MNBoxster...aka Lil bastard)

1- by Lil bastard
4- by MNBoxster

When are you going to come out of the closet, Jim?"

Originally Posted by bmussatti "

I don't care how many times you can work the word "Vernier" into a thread. If you forsake your Boxster for a Vespa scooter, you should not have the nerve to show your avitar around here.

Separate but unrelated, I see as I type this that the built in spell check has underlined "Boxster" as a spelling error. How ironic.

[Tool Pants]

I have a vernier caliper. But once I bought a digital caliper I did not use the old one anymore.

Also have an old micrometer that you look at the numbers on the barrel. Needed that years ago to measure valve shims. Now have a digital micrometer, so I don't use the old one anymore.

So I have worked in all the words.