Brakes feel crazy soft during rain

King_Ch1cas

Anybody else have it where you have to stomp your foot all the way down to get your car to stop? This only happens in the rain for me though. I have Akebono brake calipers with slotted rotors (brake pads unknown since I bought her used)
. Probably just have to bleed my brakes or do you guys think it's something else? Thanks guys

eliboy

Did you checked your tiers? I am asking it because you are saying it only happens in rain.


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Halfkiddio

Rain will cause the pads to work slightly harder to do the same stopping force. I would suggest flushing the fluid and seeing how it feels after. There's not really anything that could cause a soft pedal in the rain only.

King_Ch1cas

Yeah I can see how in the rain I have to press a little harder but this in this case the brake pedal is on the floor. If I pump the brake pedal it helps a lot if not I really have to go hard as if the cars off. Ima flush the brake fluid for sure this week, thank you

King_Ch1cas

Yeah just checked them, they have a lot of great left and it doesn't feel like the car is sliding

Spooler

Depending on what pads are on the car it could be due to them being cold. I have to tap my brakes from time to time driving on the interstate in the rain to keep my pads up to temp. I am running XP8's all around with Z1 2-piece rotors. It is not that bad at all unless they are stone cold.

JARblue

I'd be surprised if fresh fluid doesn't solve the issue for you.

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B&W_Evader

Run XP8s all around here too. They've never felt like I had to push extra hard on them. Lowest temp I've seen on my instrument panel is 31 but car is garaged. Rain does not bother them either. Sounds like you need a bleed first. After that press your foot on the peddle, it should stay where it is with constant force. If is slowly moves down, you have a leak somewhere. It would probably be master cylinder or brake calipers. Check for gunk on the inside of the wheels to find the leaky caliper. Don't get brake fluid on your paint. Over time it will eat it up like paint remover.

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Halfkiddio

I've had XP10/8's on the Z, and I now have Endless ME20's. I noticed a slight increase in pedal pressure when they were cold, but only to get actual bite out of them, not fluid travel. I do notice a slight hesitation when initially pressing the pedal, but only to clear water off the pad and rotor.


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Spooler

This is what I was talking about. Guess some folks didn't understand what I was trying to say.

Spooler

The rain you have is nothing like we have. It's a downpour here. I drive in the rain all the time.

KE_1508

Give Torque RT700 a shot or Motul 660. If your foot is going to the floor, there might be a chance air is in the system. So a rebleed might cure the "foot to the floor" feeling. Also, have you checked the level in the reservoir?

cv129

OP's car see a lot of miles, 130k+ miles for sure, when was the last time brake fluid was changed?

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SouthArk370Z

As others have said, wet brakes do not increase pedal travel. You will have to press harder on the pedal but travel should stay the same. Sounds like you have air trapped somewhere.

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King_Ch1cas

Bought the car with 105k miles on it and swapped all fluids out, I'm at 133k. Feel like some fresh fluid is needed. I'm doing that this weekend, I'll let y'all know. Also Ima change out the brake pads