hello every one , i know this might be a stupid question but i wanna ask it anyways , well i have a 2003 g35 coupe with brembo i have cross drilled rotor in front and back , and my question is i wanna change my brake pads just to be safe , do i have to replace the disk rotor as well or not , , the disks are not worped or nothing they look new, thank you for ur help

 

You're going to get differing opinions, but I do this all the time (replace pads only).

 

If the car is stopping well, no shudder felt in the steering wheel at any speed, there is no need to machine the rotors... slotted\drilled rotors hardly ever warp due to the efficient way they move heat; Just change the pads

 

Are your pads actually worn down to the point that they need to be replaced or are you replacing them "just to be safe?"

 

There's no reason why you couldn't change the pads if you don't have issues
with the above mentioned items. However I would clean/scuff the discs when
you install the new pads, and use the break-in process. What pads are you
going to use, not OEM

 

mostof the time you wont have to change tthe rotor.

 

Yep... +1. If it stops smooth with the current rotors, keep em on there and just scuff up the surface.

 

if its in good shape then no. but be sure to resurface the rotors

 

What's wrong with OEM pads? For bite and cold stops, they are the best pads you can get.

 

iam not going with oem , cuz for some reason they seem like go out too quick so my choice at this point is to go with HP HAWKS i have heard some good things about it

 

When you change just pads important to clean rotors of old compound transfer film...................the rotors don't stop the car, the combination of the pads and the transfer of pad compound to heat sink [rotors] do.

Mixing compounds that way can result in unusual friction until the old compound wears away.

 

How do you clean your rotors of the old brake compound? I am in this same situation and looking to upgrade my brake pads the Hawk HPS pads. Thanks in advance.

 

You can get some 120-150 (medium) grit sandpaper and scuff the rotors, then wash them with mild soap and water.

FYI - Many wouldn't consider the HPS an "upgrade"...at least in terms of initial brake bite. I fall into that camp.

 

Maybe upgrade is the wrong word. I created a post about this and didn't get much response...but I have an '04 X that puts out WAY too much brake dust and I am looking for a solution to fix it. It is ruining my wheels as I can't clean them frequently during Nebraska winters

 

Well, you may solve the brake dust problem with HPS, but you'll introduce a stopping problem, especially during the winter. In my experience with HPS, in cold weather and especially in the rain, the brakes took an extra split second to warm up and "grab" before they worked - it was downright scary. Would never go back to them on a street car. On the track it's a different story because they are kept warm.