They probably wear the rotors faster. At least that's the way my Mercedes works. But the brakes are great!
I think that was the aregument a several years ago against the semi-metallic/ceramic pads I heard from a guy that still had organic pads for these cars. I think the '70-'71 and possibly some '72s have an expensive rotor configuation that makes one want to preserve them when possible.
Actually, after reading something on the internet (Everything on the internet is true, right?
) some guy said it actually makes the rotor thicker by fractions of an inch...
Didn't read the whole thread, gotta send the kiddo to school!
http://www.handymanxchange.com/ceramic-vs-semi-metallic-brake-pads-vt185.html"There isn't such a thing as 'ceramic compatible' rotors. There are two types of brake wear: abrasion and adherence. Metalic pads cause abrasive wear which decreases rotor thickness, whereas ceramic (usually mixed with a soft alloy like copper to distribute heat) causes a more adhesive 'wear' which actually increases rotor thickness. We're talking in the realm of a fractions of millimeters so this isn't a concern, which is the point. Any rotor will work with any type of pad. But as it turns out, modern Ceramic pads can actually increase the life of the rotor (reduced surface wear) and the pads typically last 30% longer."
