I have a 2004 G35 RWD Auto. I had just bought rotors and pads and both the rotors and pads turned out to be too small. I want to find the correct brakes.

I don't think I have Brembo Brakes; my calipers are dual piston and black they do not say anything on them? I measured the rotors with a tape and they are almost 12-7/8.

Any help is appreciated

 

I think I may have 2005 G35 front brakes on my car.

 

Here's the rotor you should have, scroll the picture to get the side dimension but the overall is 296mm. The only other option is the brembos which only came stock on the 6MT (larger diameter rotor). It's possibly (unlikely due to only 2 piston front) that someone swapped rotors but look for headstampings on it to confirm.

http://m.autozone.com/brakes-and-traction-control/brake-rotor/duralast-gold-brake-rotor/337197_195255_2708?location=Front

 

That is the same size I had purchased 296mm on Autozone.

I am convinced someone put the 2005 front brakes on. On rock auto the rotors for the rwd 2005 rotors are 319.5 mm

...and here is a picture of the caliper I found on Autozone for the 2005, It is the same 2 piston but mine are all black without the gold

http://www.autozone.com/brakes-and-t...73_555236_5913

 

Should be some casting marks or headstamping somewhere on the brake caliper to identify exactly what's on it. You're probably right about them being swapped with a different year but you need to positively identify them before tossing rotors in. I think the same front calipers were used in the '05-'07 coupe