Nissan 370Z Forum - View Single Post - Odd question: CJM RRP vs 2 piece brake rotors

Shoeshear · 04-15-2022, 05:03 PM

Dumb question, that I think I know the answer to, but here goes. Been running 300TW street tires for the last few years. Got a set of track wheels and going to be moving to Hankook RS4 285 square. I just added brake cooling ducts, but I have boiled the brake fluid at the track before.

The question:

My wife has approved a new purchase and I have been reading that with this step up in tire (also just installed suspension goodies), I’m going to run into fuel starve. I have not yet run into fuel starve (I always track with minimum 1/2-3/4 tank), but I’m considering picking up the CJM RRP.

Alternatively, I’m also considering picking up the Z1 2 piece rotors for a bit of weight reduction and and maybe a little less brake fade (???).

I’m guessing the answer will be to go with the RRP, but I wasn’t 100% sure as I haven’t yet encountered fuel starve.

Brief car specs and goals:
HPDE mostly for now, and eventually NASA TT or road racing (guessing ST3). Car still is street driven on occasion, but I usually daily my motorcycle. Will probably be doing 3-5k miles per year in the car (work is going to be a long drive).

Wheels/tires: Enkei RS05RR 18x10.5 square with 285 Hankook RS4 all around
Suspension: FA500 coilovers true type 12k front 8k rear
Alignment: -2.5 front camber, +6.x caster, a little toe in. Rear is -2 camber and .12” total toe in (too much IMO, will be getting realigned).

Reference lap time: running about a 1:50 or maybe high 1:49 at laguna seca and 1:09 on Bondurant/Firebird/Wildhorse West CW. All on ContiExtremeContactSport 255 F and 285 rear and stock suspension.

Does the collective think l will run into fuel starve with my step up? Thanks in advance.

04-15-2022, 05:03 PM	#1 (permalink)
Shoeshear Base Member Join Date: Oct 2017 Location: Tucson, AZ Posts: 127 Drives: '15 370z Sport MT Rep Power: 3363	Odd question: CJM RRP vs 2 piece brake rotors Dumb question, that I think I know the answer to, but here goes. Been running 300TW street tires for the last few years. Got a set of track wheels and going to be moving to Hankook RS4 285 square. I just added brake cooling ducts, but I have boiled the brake fluid at the track before. The question: My wife has approved a new purchase and I have been reading that with this step up in tire (also just installed suspension goodies), I’m going to run into fuel starve. I have not yet run into fuel starve (I always track with minimum 1/2-3/4 tank), but I’m considering picking up the CJM RRP. Alternatively, I’m also considering picking up the Z1 2 piece rotors for a bit of weight reduction and and maybe a little less brake fade (???). I’m guessing the answer will be to go with the RRP, but I wasn’t 100% sure as I haven’t yet encountered fuel starve. Brief car specs and goals: HPDE mostly for now, and eventually NASA TT or road racing (guessing ST3). Car still is street driven on occasion, but I usually daily my motorcycle. Will probably be doing 3-5k miles per year in the car (work is going to be a long drive). Wheels/tires: Enkei RS05RR 18x10.5 square with 285 Hankook RS4 all around Suspension: FA500 coilovers true type 12k front 8k rear Alignment: -2.5 front camber, +6.x caster, a little toe in. Rear is -2 camber and .12” total toe in (too much IMO, will be getting realigned). Reference lap time: running about a 1:50 or maybe high 1:49 at laguna seca and 1:09 on Bondurant/Firebird/Wildhorse West CW. All on ContiExtremeContactSport 255 F and 285 rear and stock suspension. Does the collective think l will run into fuel starve with my step up? Thanks in advance.