I have an '09 REX and just installed HPS pads last weekend, car has 16K miles on it. I followed their "burnishing" procedure, but even that wasn't enough. I have had to do alot of high-speed stops to break in the pads. These pads are as hard as a rock, but I think they will last a long time after broken in. They made a "sanding" noise for several days after installing. The stopping power is definitely MUCH better than stock. A great upgrade, just have patience, and do alot of hard stops from 50+mph to break in the Hawk pads.