Mark Thornton

I am thinking of doing a brake job on my 928 and I am confused are the Rotors the same ? Left or right as I seen some on E bait and they are the same part # Are there rotor manufactures that i should avoid?

ROG100

Use Zimmerman or Sebro - rears are the same while fronts are handed - normally available as slotted or cross drilled.

mark kibort

yes, they have left and right rotors up front.

Mark Anderson

78-81 front discs are the same both sides

Bertrand Daoust

And if your MY needs different ones for the front, make sure to install them correctly.

SMTCapeCod

I prefer having all four slotted, matching is nice.

Not hard to find if you look, they've been good for a few Ks so far.

Mind the orientation post above.

dr bob

Mark and Roger both offer very good prices on known-good rotors. There are enough off-shore 'foundries' that cheap knock-offs are showing up on places like E-Bay. Best 'test' is to compare them with factory or Zimmerman for weight, true, and balance.

I replace rotors maybe every 100k on a car, and considering how much I depend on brakes, it's an area where I'm not a fan of skimping. I trust that the guy stopping behind me has similar consideration for his brakes too. So if that is or might ever be you or your family, please don't skimp.

SMTCapeCod

If your benchmark is 100K rotor replacement and that's your target for the "guy stopping behind you" ...so be it.

But separately, personal preference isn't always correlated with economy or "skimping."

I acknowledge your caveat: "Free advice and shared experience, with absolutely no relationship to your real-world conditions."