Anyone get soft brakes in the rain?
11-24-2011, 05:44 PM
#23
TECH Enthusiast
Join Date: Apr 2009
Location: Pocatello Idaho
Posts: 531
Likes: 0
Received 0 Likes
on
0 Posts
I've noticed that in most cars I've had. I wonder if "performance" pads are more susceptible because the brakes stay cold longer? I mean in the dry, as soon as you touch the pedal they start to heat up. With water, it won't heat up past ~200F until the water is all evaporated. The stock V pads are pretty aggressive. And I run Hawk HPS pads on all my other cars. Possibly if I ran softer stock pads on them I wouldn't notice?
I haven't noticed it as much since I did the "Brakemotive" replacement. It could be the slotted rotors help clear the water from the pads quicker? Or just that they have less heat-tolerant ceramic pads, which bite harder when cold?
I'm just guessing though. I doubt it's the ducts, but maybe the openness of the wheel contributes to it?
I haven't noticed it as much since I did the "Brakemotive" replacement. It could be the slotted rotors help clear the water from the pads quicker? Or just that they have less heat-tolerant ceramic pads, which bite harder when cold?
I'm just guessing though. I doubt it's the ducts, but maybe the openness of the wheel contributes to it?
11-27-2011, 05:57 AM
#25
Troll Banned For Creating Multiple Accounts (thebigjmsho, JimmyHemroid, AND Junior1))
Join Date: Oct 2011
Posts: 88
Likes: 0
Received 0 Likes
on
0 Posts
What is the issue exactly?
The first post refers to "Brake softness in the rain" This is not a condition I have ever heard of. Never read of it in a repair manual or anywhere yet everyone seems to know what "brake softness" is.
The author of this thread goes on to say:
"If I don't slam on them every so often they really get soft for about the first 3-8 seconds. I can hold the same pressure and feel the car brake harder and harder between 3-8 seconds"
I would only be guessing here but if it's soft is it going to the floor? Spongy pedal? Low pedal? Hard pedal? Power brakes have a soft pedal I supose..
Please enlighten me..
11-27-2011, 08:19 AM
#26
TECH Enthusiast
iTrader: (1)
Join Date: Nov 2010
Location: The Old Dominion
Posts: 566
Likes: 0
Received 0 Likes
on
0 Posts
It feels like they are soft, because you have to use a lot of pedal to get any braking. The reality is the pads are not biting because the brakes are wet, so you need more pressure.
It takes more pedal to get any kind of braking to happen, then after a couple seconds they work as normal. It feels a lot like a soft pedal when it is happening.
And to a couple posts up, I've *only* had the issue with performance pads like Hawk HPS's (and the stock Brembos on the V). It's been better with the Brakemotive ceramic pads, though also that included slotted rotors.
It takes more pedal to get any kind of braking to happen, then after a couple seconds they work as normal. It feels a lot like a soft pedal when it is happening.
And to a couple posts up, I've *only* had the issue with performance pads like Hawk HPS's (and the stock Brembos on the V). It's been better with the Brakemotive ceramic pads, though also that included slotted rotors.
11-27-2011, 07:24 PM
#27
TECH Apprentice
Thread Starter
iTrader: (6)
Join Date: Dec 2010
Location: Sammamish,WA
Posts: 389
Likes: 0
Received 0 Likes
on
0 Posts
So the only thing I can think of after we all have the same issue here is that there are only two differences between my road race mustang and my V. 1. Ducting for brakes and the pads. I ran Infineon with the cobra in an absolute downpour at 100+ mph down to 20 mph with no kind of pedal like this. Seems like everyone has different pads also so I am ruling that out also.
So the only thing I can think is the ducts forcing water as lame as it sounds? Any other idea's?
Thanks,
Dave
So the only thing I can think is the ducts forcing water as lame as it sounds? Any other idea's?
Thanks,
Dave
12-05-2011, 06:44 AM
#28
Teching In
Join Date: Oct 2009
Location: Dallas/Richardson Tx
Posts: 35
Likes: 0
Received 0 Likes
on
0 Posts
I'm running MAPerformance's J-hooked rotors and RacingBrake ET500 pads. I have this happen to me everytime I'm in the rain, but it tends to go away after everything has heated up. After city driving for a bit the soft feel goes away and they stop like they do in the dry. Not exactly sure if it's moisture getting in between the pad and surface and the brakes not being warm enough to immediately evaporate the moisture or what.
12-05-2011, 07:18 AM
#29
TECH Apprentice
iTrader: (1)
Join Date: Jul 2011
Location: Hardwood, md
Posts: 306
Likes: 0
Received 0 Likes
on
0 Posts
I think chitown has hit the nail on the head.
I have generic dealer pads on the car and it does it religiously until I get going for about 15 minutes. I have always owned performance cars and have had hawk pads. Even my f150 has them. Never any problem. The only difference is the duct in the various vehicles.
It would make since that the ducts could be the issue due to the fact that it would feed in water. As you drive, the rotors will heat up, therefore after a period of time would be hot enough to burn off the excess water.
I would be interested to block off the duct in the rain and see if theres a difference. If so, I'm sure you could get some oil based filter and introduce it at the bumper to delete the issue or atleast reduce it.
I have generic dealer pads on the car and it does it religiously until I get going for about 15 minutes. I have always owned performance cars and have had hawk pads. Even my f150 has them. Never any problem. The only difference is the duct in the various vehicles.
It would make since that the ducts could be the issue due to the fact that it would feed in water. As you drive, the rotors will heat up, therefore after a period of time would be hot enough to burn off the excess water.
I would be interested to block off the duct in the rain and see if theres a difference. If so, I'm sure you could get some oil based filter and introduce it at the bumper to delete the issue or atleast reduce it.
