AP Racing 6-piston 14.25" rotors on stock 18's?
 

Has anyone installed the AP Racing 6-piston 14.25" rotor BBK on a 370z with the base 18" wheels?

For reference, this kit: https://www.stillen.com/brakes/brake...ssan-370z.html

I printed the template and the clearance looks super close to where I'm not quite sure if it will fit or not. I tried searching and I see people saying it fit on some 18" wheels, but I couldn't find anyone talking about fitting them on the stock 18" wheels.

I'm hoping that I can avoid spending another $1000-$3000 on 19" wheels and tires just so that I can do the BBK upgrade.

I hope you don't plan on spending that much on a brake kit.:confused::eek:

You can get a Stoptech ST-40 kit for under a 2k if you look around. Which would unquestionably be more than enough for spirited driving. Picking the right pad is the caveat here.

A 355mm(14") is the recommended max size for a 18" wheel. You MAY be able to squeeze a 370mm kit if the caliper is low profile (monoblock) or a deep clearance for the spoke design.

You are best going with a 4piston 355mm kit. Unless you just want the bling factor of the large 6 piston kit or are getting it for a super good deal. :tiphat:

Stoptech 355mm kits

ST-40 -83.488.4700.71
ST-60 -83.488.6700.71

more kits here - https://conceptzperformance.com/items.php?c=3&p=24

better question:
If you're dropping that much dime on a "big brake kit" . . . . why are you using base wheels?

The only reason you need that much brake is if you are driving on a track, which means you should have significantly better tires, which means wider wheels

You can get a set of 18x10.5 Enkei RPF1's or NT03+M's for around $1300, which is a fairly standard track setup - thats cheaper than your calipers

Then you need some stickier rubber

the brakes are the last thing you need.

OEM akebonos already have a fuckin 14 inch rotor in front


big brake kit on base 18's is . . . stupid

I don't think bbk is stupid when you are on 18's depending on your purpose. Sport brakes are good enough for spirited driving for sure and most track events. BBK are necessary for endurance and high speed and long courses.

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I have the base model with the non-Sport brakes and I want to upgrade them. Even a light amount of spirited driving (and associated stopping) is enough to induce fade. I would not trust my brakes on any track event.

I'm open to the idea that maybe I don't need the AP racing kit, but I definitely want to upgrade them and I want to do it once. I don't want to get to the track and decide I should have spent another $2k in the first place and then have to pony up for another whole set of brakes.

I did print out the template for the 6-piston AP Racing kit and pulled one of my wheels off and it definitely would rub, so those are out unless I get new wheels.

So I'm thinking about getting the 4-piston front and rears unless there is a compelling reason to get something else?

not 18's - BASE 18s

No one doing endurance driving, high speed, or long courses is using OEM base wheels

they certainly aren't avoiding wheels due to cost while spending double that on brakes

a used set of akebonos, good pads, good fluid, and new wheel/tires is the way to go

a "big brake kit" is utterly useless on crappy rubber

Just do when im planning on doing, upgrading to the 4 pot akebonos with some aggressive pads. Besides if you just plan on doing spirited driving and track days you dont need a huge bbk.

4 Pot + SS lines + Autocross pads is way more bang for your buck then a full size bbk you probably wont even make good use of.

Also you should probably get some wide 19's anyways, the base wheels are not wide enough to hold some meaty tires, especially the super grippy type. Im upping to 275/35/19and 285/35/19, and im gonna need the 4 pot to hold up to my aggressive driving style of super late braking

Just curious, are you on stock brake pads and fluid?

Yes, my brakes are fully stock currently. Obviously pads/fluid will be upgraded regardless of which caliper/rotor upgrade I choose.

4 piston rears are not necessary. The sport 2piston kit is beyond enough for the weight balance of the car.

a 4 piston kit in the front is honestly enough if you go with the right pads and tires.


The most ideal/affordable kit would be just the sport package. Next up would be a stoptech St40 or str40 (if you can find it for a good deal), with the sport caliper and rotor in the rear. I'd spend as little as possible on this and save for a larger wheel and tire setup - At the very minimum 245 squared on 18x8.5 wheels.

Bro...y so much profanity lol :shakes head:

Okay, so you think something like the Z1 sport brake kit? https://www.z1motorsports.com/brakes...ar-p-4296.html

I can do that for around $3k for both the front and rear with the 2-piece rotors. That's basically $2k less than I was budgeting, so I guess I could get some new wheels / rubber like so many people are recommending.

Like optionZero indicated. You may want to go with new tires and wheels first and a good set of pads for the current brakes.

As far as wheel size, long term plans may dictate numerous sizes. A 18x9.5 275/40 (...hankook rs4...) squared would be a decent nominal upgrade that should meet your needs street and track.

Yep. 2 piece slotted rotors, Motul 600 brake fluid, SS brake lines, Carbotec or other good pads. This is about $2,700 on the page you posted :tup: