Does size really make a difference

Mr C · 11-26-2012, 12:06 PM

Hi guys,

I'm looking for some guidance. I have had problems with my front discs (rotors), particularly the front right. I have got a heavy right foot and do tend to make the most of the long and windy roads in my area. The net result is disc (rotor) punishment. Anyway, the dealership replaced my front discs (rotors) only about two months ago after I complained about a rubbing noise detectable at low speeds from the right front wheel area.

After the replacement all was fine, however now I'm getting the same noise again. I've had the pads checked and all seems okay. I wondering if I should forget the stock set-up (sports pack 356mm - 4 pots) and fit a more powerful set up (356mm slotted discs - 8 pots), or a larger set-up (385mm slotted discs with 8 pots), to be run with stock 19" rims

Any advice anyone?

Fishey · 11-26-2012, 01:23 PM

Sounds to me like they did a crappy job installing parts or installed crap parts. I don't have a whole lot of experience with the factory parts maybe they are to blame?

DR_ · 11-26-2012, 01:40 PM

There are pro road racing teams as well as hundreds of track junkies on this site using the stock sport calipers and stock sized rotors so I really doubt in your case, size matters. However I do think the pads and brake fluid are more to blame and I suggest upgrading these and see how your brakes work.

takjak2 · 11-26-2012, 04:09 PM

The stock package is great for braking, it's downsides are only really in heat dissipation and total weight. If you are warping rotors and not coming from a track then it could have simply been you parking it hot after a carving run which will cause them to cool unevenly. If you get the brakes hot drive around a little before stopping. Just a few minutes can make a couple hundred degree difference.

Replacing stock rotors is also not terribly expensive. You could replace the front OEM rotors once a year for ten years before you made up for just an initial upgrade price.

cossie1600 · 11-26-2012, 08:01 PM

Rotors rarely warps, you got pad deposits on them

ShinyBlueZ · 11-26-2012, 09:11 PM

I hope size doesn't make a huge difference

DCNISMO · 11-27-2012, 07:08 AM

Go get some BrakeClean and spay them to clear out the junk.

Guard Dad · 11-27-2012, 07:21 PM

If he's really putting heat into the rotors perhaps the Stillen front brake cooling duct kit would help.

11-26-2012, 12:06 PM	#1 (permalink)
Mr C Base Member Join Date: Apr 2012 Location: Suffolk Posts: 15 Drives: 09 Nissan 370z, Rep Power: 13	Does size really make a difference Hi guys, I'm looking for some guidance. I have had problems with my front discs (rotors), particularly the front right. I have got a heavy right foot and do tend to make the most of the long and windy roads in my area. The net result is disc (rotor) punishment. Anyway, the dealership replaced my front discs (rotors) only about two months ago after I complained about a rubbing noise detectable at low speeds from the right front wheel area. After the replacement all was fine, however now I'm getting the same noise again. I've had the pads checked and all seems okay. I wondering if I should forget the stock set-up (sports pack 356mm - 4 pots) and fit a more powerful set up (356mm slotted discs - 8 pots), or a larger set-up (385mm slotted discs with 8 pots), to be run with stock 19" rims Any advice anyone? __________________ _______ Injen Induction kit \| Miltec Y Pipes \| HFC's \| SSM HKS Exhaust \| UpRev Remap \| EIBACH 15mm spacers fnt & bck \| STILLEN drilled and slotted discs \| 324whp

11-26-2012, 01:23 PM	#2 (permalink)
Fishey Base Member Join Date: Sep 2012 Location: Lebanon Posts: 159 Drives: Volvo T5-R Rep Power: 12	Sounds to me like they did a crappy job installing parts or installed crap parts. I don't have a whole lot of experience with the factory parts maybe they are to blame? DEpointfive0 likes this.

11-26-2012, 01:40 PM	#3 (permalink)
DR_ Track Member Join Date: Jul 2009 Location: Dallas Posts: 981 Drives: Touring/Sport M6 PG Rep Power: 16	There are pro road racing teams as well as hundreds of track junkies on this site using the stock sport calipers and stock sized rotors so I really doubt in your case, size matters. However I do think the pads and brake fluid are more to blame and I suggest upgrading these and see how your brakes work. fuct likes this.

11-26-2012, 04:09 PM	#4 (permalink)
takjak2 A True Z Fanatic Join Date: Feb 2011 Location: Sterling, VA Posts: 1,922 Drives: Legit Racecar 370Z Rep Power: 142	The stock package is great for braking, it's downsides are only really in heat dissipation and total weight. If you are warping rotors and not coming from a track then it could have simply been you parking it hot after a carving run which will cause them to cool unevenly. If you get the brakes hot drive around a little before stopping. Just a few minutes can make a couple hundred degree difference. Replacing stock rotors is also not terribly expensive. You could replace the front OEM rotors once a year for ten years before you made up for just an initial upgrade price. FL 4Motion likes this. __________________ Mods \| Stuff \| Things \| Seat Time \| Nismo facebook.com/TeamSparrowSpeed

11-26-2012, 08:01 PM	#5 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 29	Rotors rarely warps, you got pad deposits on them Mike likes this.

11-26-2012, 09:11 PM	#6 (permalink)
ShinyBlueZ Enthusiast Member Join Date: Apr 2012 Location: In My Z Posts: 462 Drives: Shiniest Bluest Z Rep Power: 13	I hope size doesn't make a huge difference

11-27-2012, 07:08 AM	#7 (permalink)
DCNISMO Track Member Join Date: Nov 2011 Location: washington dc Posts: 995 Drives: Nismo Z Rep Power: 178	Go get some BrakeClean and spay them to clear out the junk.

11-27-2012, 07:21 PM	#8 (permalink)
Guard Dad Enthusiast Member Join Date: Aug 2010 Location: South Orange County, CA Posts: 422 Drives: 2010 370Z Silver A7 Rep Power: 14	If he's really putting heat into the rotors perhaps the Stillen front brake cooling duct kit would help. __________________ 2010 Brilliant Silver, Base w/Sport Package, AT7, Katzkin leather, upgraded audio and lots of Dynamat and a bunch of small stuff.

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