Originally Posted by Expatriate

Interesting thread. We have Avid mechanicals on our tandem, as they pretty much the only tandem rated mechanical disc brakes available. They work quite well too, with 203mm XT discs. We also have a new set of Julie's, still in the box. I ordered them as Magura has approved them for tandem use when used with braided stainless steel lines. The ratings for tandems have as much to do with heat resistance as stopping power, but I don't see it as being a good use of your cash to swap to the Avid brakes unless your Magura's are no longer working properly.