To be honest I drive a lot so I thought my brake pads were failing when I started hearing a noise bought new brake pads and removed the tire and my brake pad only to find out which brake pad I was using had out had 90% life left, took the brake pads i bought and returned them and cleaned them thinking they were just dirty or something. For the last 2 weeks I was driving with really annoying noises, every time I press the brake on my car it's annoying as hell I'm just waiting to get more money just to get OEM from the Infiniti dealer for my Q50 buy but do not recommend these pads at all. I will call my bank to get my money back for this purchase. Do not buy these brake pads and stay away from them. (Took them to my mechanic and he even showed me the pad is cracking at the top yes there is a crack on the pad showing what that junk is) Also you can see the pad has crystallized out sooo much Metal on it and one suspects that it is a ceramic brake pad.