I was interested in purchasing all four and wondered on the quality. I dont track much and ive heard people say that the rotors tend to crack due to heat. Also, how many miles do slotted-cross drilled rotors usually last. Thanks.

 

Get oem, dont get the crap on ebay.

 

I wouldn't worry about a "quality" cross drilled rotor cracking under normal and/ or spirited driving.

The question is whether that ebay rotor is a "quality" one? Probably not. I'd go for a name brand one with a good reputation and from a vendor that will stand behind it.