I'm sure mine are aftermarket as I got them from Euro Car Parts, it seems the genuine Nissan OEM ones are about 7x the price so I wasn't expecting them to be the best but the projected 5,000 total miles for a front set seems ridiculous. I've tried both the DS2500 and Hawk PC previously and whilst I did get 20,000+ miles per set they both squealed a lot for at least half their life. Having to get them removed and re-greased regularly or whatever some people suggest as a solution is a pain. Any suggestions on a fast road pad for use with OEM discs that never squeal up to around £120 would be appreciated!