I just placed order zimmerman rotors from pelican parts and I was wondering if I only replace rotors except brake pads.
because I replaced pads about 4months ago, i think it's still as good as new. Is it gonna be problem if i only replace rotors?

 

It would have been better to do them at the same time. I really have no idea if it would matter or not

 

It will be fine. It should have been done at the same time, but it will all be fine in the end.

 

While there is nothing wrong with it, and so long you do a bed in process again twice, it's recommended to always replace your pads if you replace the rotors. The bed in process won't necessarily match the pads to the new rotors like they do when the pads are new as the old rotor pattern will still be there until it's worn down.