Is it possible to convert a G35 SEDAN RWD 2004 to the specifications of an 05 by simply installing the dual piston calipers, 12' rotors, and corresponding pads? Or is there something else involved? More importanly is the performance noticeable? I just got my G35 this weekend so I was curious. If i should have entered this post elsewhere my apoliges just point me to the right direction.

 

2005 brake system is really no better than 2004. I would rather spend the money on real performance brake systems. There are plenty out there to fit your budget, just do a search.

 

To answer your question, yes it's possible. There is a DIY somewhere on the site.

For the front, it's rotors, calipers, pads and I think brake lines and related banjo bolts.

For the rear, rotors, caliper brackets (you can reuse your original calipers but need new support brackets and will require trimming the dust shield a bit.

Performancewise, on paper, the 05+ system is better with larger diameter rotors, more rotor mass and larger pad clamping surface area. In reality, the performance different is minimal due to the aggressive pads the 03-04 used in OEM form. The 05+ pads are less aggressive but do not dust as much. Braking performance through magazine testing (yeah...i know) shows pretty much the same performance between the two braking packages. The average driver doesn't use their brakes hard enough for the extra rotor mass to come into play in helping keep the brakes cool as well. Anyone who open tracks their car understands that large, heavy brake rotors are ideal for reducing brake fade during heavy use. So if you are a road racer, the larger rotors are more desirable.

They do help fill out larger wheels though. A 12.6" rotor looks a lot better in a 19" wheen than a smaller 10" rotor (i forget what the 03-04's use for rotor diameters)

 

Thats a waste of money
The 03 and 04 brakes are better to begin with so that would be a downgrade

 

Wow what happened to all the people who knew their stuff on the forums, mustang is the only right one.
I did the upgrade, and yes its an UPgrade. I got full set of rotors, pads, ss lines and calipers for 200 from a local member and installed them. You need calipers, caliper brackets, rotors pads and lines, front and back. The back might not be a worthwhile upgrade since its a minimal gain in size but I had them so on they went. As for benefits, the pedal is the first thing I noticed but it may be the ss lines, but before if I just touched the pedal the breaks would come on in full force, it was just super sensitive, but now its a nice progressive feel and other people can drive the car withought jerking the braks. Then there is the increesed life of the brake pads. I used to go through a set of pads every 4k miles sometimes in 2k if I went on to many mountain runs. Now I still have the pads I put on last year and its just now time to change the fronts. Now comes the important part, the brake fade is almost none exisrant
At about 2 minutes you can see how the 04 brakes perform after some spirited driving in the mountains
After I did the swap I went on the same run and never had any problems with fade
Its honestly worth it if you drive your car hard or even just want some less dust to deal with, but I guess it does depend on the price of parts if you can find all the parts together and are willing to do the work yourself then you should, but don't go spending a ton of cash for a small upgrade, save up and get a set of akebono brakes

 

Thank you for the input. I appreciate your time....

 

awesome info nazco the 20s on my sedan make a brakes look tiny I have been wanting to go with a larger brake setup but I didn't want to spend thousands of dollars on a big brake kit