csnow/all,
I get 2 sets of OE pads to each set of rotors. This has been the case for 250ish k miles on my3 cars.With the exception of track days, I run OE everything. However, of note IMHO I've begun to cryo-treat the OE front rotors on my 500E and they seem to be considerably more durable-usually I warp front rotors after a day at the track, but the last 2 sets of rotors so treated have held up fine, and show minimal/no wear so far (too early to report on long-term durability)
As to my ignoring brake fluid quality issues in my earlier responses, please understand that my advice is given presuming near-new fluid is in the subjectr car's system. FWIW I power bleed each car each year (and an extra one after a track day), so I can get away with a 15 minute pad change every so often
