ssspssh wrote:The rotor is not bigger than the stock wheels. Maybe my car is really fast. Maybe not. You dont even know me. Maybe I have access to a cnc. Most people with money are friendly to people who are friendly to them. I am not here to impress you.I am trying to get help with something. I apperciate your help.
I don't need to know you. Someone with access to a CNC and the ability to utilize it wouldn't even need to ask this question to begin with. You asked this question because you don't know how to go about installing them.
It's common logic to assume that if the car was designed to clear (at the spindle) a 15" diameter wheel then the spindle itself is not going to accept 15" diameter brakes. This means, quite clearly, that you will have to design some caliper relocation brackets for the calipers.
If your friend has a GTR, why don't you take a little drive and check what kind of fitting is on the brake lines. Why are you asking us? Again, the GTR hasn't even hit the US market.
Your car is not fast enough to need 15" brakes.
Your answer is this: Get the brakes first, get some aftermarket 5-lug hubs for an S13, install the hubs, put the rotor on and start measuring for a CNC'd caliper mount. Once you have that CNC'd then you can mount everything up. Then buy the brake lines you need, they will either be IF (inverted flare) or a banjo fitting. Order them for an S13, and if the banjo / IF is a different diameter then you'll need to special order for that diameter. Odds are the GTR will utilize a two piece brake line like other wishbone Nissans so you will not be able to use it's lines.
The GTR spindle will not fit your car, it uses a completely different suspension design.
You will want to use a different master cylinder, and you will have HORRIBLE brake balance. You will notice this if you ever track the car.