Dissapointed with the G37S Brakes.
01-12-2009, 04:34 PM
#1
Dissapointed with the G37S Brakes.
Took the car for a nice solo canyon run this weekend. At first everything was great. The car was performing great. Handling, power, braking was all up to par. About 5 minutes into the run I started smelling brakes, that was followed by a bad shake in the steering wheel when I would apply the brakes. Almost the same feel you would have if you're rotors are warped.
I slowed down and let everything cool off. Then I started up again and the brakes were now performing like before with no vibration and/or shake.
So it's safe to say that the vibration of the rotors itself was caused by the overheating of the factory G37S rotors. Looks like they are using some fairly CHEAP materials on the rotor compound of our S cars. I've never had any of my other cars have this problem before.
Just thought I would share my disappointment.
I slowed down and let everything cool off. Then I started up again and the brakes were now performing like before with no vibration and/or shake.
So it's safe to say that the vibration of the rotors itself was caused by the overheating of the factory G37S rotors. Looks like they are using some fairly CHEAP materials on the rotor compound of our S cars. I've never had any of my other cars have this problem before.
Just thought I would share my disappointment.
01-12-2009, 04:38 PM
#3
How fast were you going? Were you on some steep inclines?
Do you notice any light vibration at normal speeds?
It might also be the pads. The dealership replaced my rotors and pads at 10k because they were vibrating a bit during normal driving. I haven't experienced anything quite as you have described though.
Do you notice any light vibration at normal speeds?
It might also be the pads. The dealership replaced my rotors and pads at 10k because they were vibrating a bit during normal driving. I haven't experienced anything quite as you have described though.
01-12-2009, 04:45 PM
#5
How fast were you going? Were you on some steep inclines?
Do you notice any light vibration at normal speeds?
It might also be the pads. The dealership replaced my rotors and pads at 10k because they were vibrating a bit during normal driving. I haven't experienced anything quite as you have described though.
Do you notice any light vibration at normal speeds?
It might also be the pads. The dealership replaced my rotors and pads at 10k because they were vibrating a bit during normal driving. I haven't experienced anything quite as you have described though.
This was definitely not a PAD problem. Pads would not cause a shake. During normal driving all is well.
01-12-2009, 04:53 PM
#6
Took the car for a nice solo canyon run this weekend. At first everything was great. The car was performing great. Handling, power, braking was all up to par. About 5 minutes into the run I started smelling brakes, that was followed by a bad shake in the steering wheel when I would apply the brakes. Almost the same feel you would have if you're rotors are warped.
I slowed down and let everything cool off. Then I started up again and the brakes were now performing like before with no vibration and/or shake.
So it's safe to say that the vibration of the rotors itself was caused by the overheating of the factory G37S rotors. Looks like they are using some fairly CHEAP materials on the rotor compound of our S cars. I've never had any of my other cars have this problem before.
Just thought I would share my disappointment.
I slowed down and let everything cool off. Then I started up again and the brakes were now performing like before with no vibration and/or shake.
So it's safe to say that the vibration of the rotors itself was caused by the overheating of the factory G37S rotors. Looks like they are using some fairly CHEAP materials on the rotor compound of our S cars. I've never had any of my other cars have this problem before.
Just thought I would share my disappointment.
Brake fade that you feel in the pedal is caused by boiling your brake fluid. Brake fade in the pads is initially indicated by the smell, and then lack of stopping power.
In your case, it seems you have gone beyond the temperature threshold of the OEM brake pads. Once you overheated the pads, you had uneven pad transfer, causing the shuddering and shaking you felt.
Remember, the OEM pads are made to be street and daily driver friendly. In your case, I'd recommend some higher temperature pads. Project Mu B-Force comes to mind.
The heat capacity of the OEM Rotors is FAR beyond what you can manage on the stock pads. Akebono is a very reputable brand.
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01-12-2009, 05:02 PM
#8
Sam Rothstein
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Brake fade that you feel in the pedal is caused by boiling your brake fluid. Brake fade in the pads is initially indicated by the smell, and then lack of stopping power.
In your case, it seems you have gone beyond the temperature threshold of the OEM brake pads. Once you overheated the pads, you had uneven pad transfer, causing the shuddering and shaking you felt.
Remember, the OEM pads are made to be street and daily driver friendly. In your case, I'd recommend some higher temperature pads. Project Mu B-Force comes to mind.
The heat capacity of the OEM Rotors is FAR beyond what you can manage on the stock pads. Akebono is a very reputable brand.
In your case, it seems you have gone beyond the temperature threshold of the OEM brake pads. Once you overheated the pads, you had uneven pad transfer, causing the shuddering and shaking you felt.
Remember, the OEM pads are made to be street and daily driver friendly. In your case, I'd recommend some higher temperature pads. Project Mu B-Force comes to mind.
The heat capacity of the OEM Rotors is FAR beyond what you can manage on the stock pads. Akebono is a very reputable brand.
Dude speaks the troof....
01-12-2009, 06:00 PM
#9
Registered User
or maybe invest on a good driving lesson at a track. it's common for "newbs" to come too hot before a corner and over brake...i had no such experience with the sport 14" akebonos at streets of willow last year. the brakes held up very well...though i did smell them...
01-12-2009, 06:40 PM
#11
The canyons in which I was running are very narrow and high speed with the occasional hair pin or tight corner which can really drop your speed down hence causing all of the heat on the brakes. I've been to these canyons over a dozen times with other cars and never experienced this problem. I've experienced major fade but never vibration.
Funny thing is once everything has cooled down there is not a hint of vibration left.. really odd.
01-12-2009, 07:10 PM
#13
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cant really tell without driving/inspecting your car for sure but id tend to agree with mike on the pad issue. i never expect much out of stock pads and since you obviously know what you're doing when you say it wasnt fade, then id address the pads before you blame the rotors.
