another thing to consider is, has anyone tried putting 18's over the G37 brake kit? If you are buying these for performance I would think you'd be using 18" wheels over 19" wheels due to rubber options alone.

I think the OEM brembos is still a better bargain, when matched with 2pc rotors, more aggressive pads, SS lines and fluids, they will cost the same if not a little less than the G37 kit.

If you want best 60-0 braking, you're probably best to stick with OEM, most BBK are best at brake fade resistance than stopping distances (this has been proven in multiple mags).

if you're thrifty, I would think OEM brembo calipers could be picked up for $700, another $1000 for 2pc rotors, $300 for pads, $150 for lines...roughly $2200 for a good brake upgrade that will allow you to fit 17 or 18" wheels with great tire choices.

if you care more for looks and still want better brake fade resistance than yeah go with the G37 with some 19's...they do look good and do fill out wheels nicely.

ConceptZ has the G37 kit for $1995 with OEM hardware plus brackets, the brembo setup I posted above with upgraded hardware is still a better deal i think, it just depends on how much you get the calipers and rotors for.

ultimately its up to you. The G37 setup will be nice once the market gets up to speed with the rotors and pads, but even then, you're talking about spending more money.

 

Exactly. Unless both stopping distance numbers were produced from the same car on the same tires and wheels, the quoted numbers don't really mean anything. The brembos have numerous track pad options as well as rotors for various uses, and are much more versatile at this point compared to the akebono kit.

Size of the caliper doesn't mean jack when you are talking about single stop braking performance. The calipers are larger, but how do the piston sizes compare?

 

Shorter braking distances are primarily about tires and brake bias. As many articles have pointed out, and has been discussed on this board countless times, just throwing bigger calipers and more and bigger pistons on does not equate to shorter stopping distances. If you change the OEM brake bias significantly, you will lengthen stopping distances regardless of the size of your calipers, rotors & caliper pistons.

From some other discussions I have seen regarding this topic, it seems that at least some of the aftermarket kits leave the brake bias alone (Stoptech, Wilwood perhaps?), but with others (including the Akebono G37 brakes) you just don't know what the impact on brake bias is. Does anyone have any comparo data looking at stopping distances with OEM '05 brakes on a G35 vs. G37S brakes on a G35? Until I see those data, I'd be reluctant to slap them on, and would sooner go with the Brembos or a tested BBK like Stoptech.

 

Of course, all have good points. But the new coupes come with similar tires re050s in the same widths as before (abeit a tad taller). So that's a "decent" starting point. The G37 is also heavier. So as an unscientific "worst case", it's also a decent starting point to consider.

No one knows the bias ratios of the master cylinder. I don't remember anyone ever pointing it out.

I'd "guess" that since the calipers are larger, so are the pistons. The front rotor is larger at 14" vs 13". I believe the rear is also?

Anyway, the larger rotor and I'm guessing the larger piston area would reasonably equate to more brake force and a shorter brake dist. (if of course the tires can handle it)

 

"decent"
"unscientific 'worst case'"
"No one knows"
"I'd 'guess'"
"I'm guessing"
"reasonably equate"

Are those words you really want to use on your braking system?

 

im glad to be getting good info and links!! thank you all very much.. im throwing on Tenzo Type M rims 19x8.5 and 19x11 with either Nitto 555 tires or some other high quality tire on them.. so ill be able to clear any kit..

 

megan kit looks nice and has been tested.. might consider them..

 

These are words required in order to discuss the subject w/o getting flamed. But since you want to get technical about it. How do you know the OEM brembo set will be fine? Is the oem master indentical to the Gs that don't have them from the factory? What's the brembo bias numbers via the non-brembo units? Since you recommended the brembo, you should have the figures?

 

I would bet that the OEM system on my car will stop within 10% of a "typical" BBK. The difference is, the BBK can do it 10 times while the OEM system can only do it twice.


I wouldn't slap just any "Brakes" on my car. I want something that has been tested and proven to work.

 

I'd say OEM Brembo with Stoptech 2-pc rotors and Project Mu B-Force pads, if you didn't care about looks too much.

 

I've seen a couple of mentions to OEM Brembo being a cost effective alternative... are you guys referring to "used" Brembo calipers? Because new OEM are waaayyyy expensive! As much or more than most if not all BBK...

 

My friend's 350Z w/ Brembo and PMU pads, DBA disc and SS lines didn't last long on a track day.

2 pc rotor for the G37 is just a matter of time. Especially the new 370Z came out alraedy. So are other brands of brake pads.
Stainless steel brake line and Project Mu pads are already available for the G37/370Z.

 

 

Holy crap! those things are huge!

 

Instead of just comparing caliper size, someone needs to measure the piston sizes.