Feeling in brake pedal when wipers first start

[Last Lemming]

This is weird. I get in the car in the morning, start it and click the windshield wipers once or twice to get the dew off the windshield and I get this “bump” in my brake pedal on each of the wipes.

if I keep the wipers going the “bump” goes away.
WTH?

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[Benjilis]

Video please

 

[jchadwell]

Video please

Not sure a video is going to help with what he "feels" in the brake pedal?

 

[Last Lemming]

Yeah nothing to video really just a clunk sound and you fell a bump in the pedal on the first couple swings of the wiper.

I’ve done some reading on the BMW boards and its been an issue that’s been noticed for years. Evidently it may have something to do with brake drying. When you turn your wipers on it tightens the pads against the disk.

IDK.

 

[gcmak]

Yeah nothing to video really just a clunk sound and you fell a bump in the pedal on the first couple swings of the wiper.

I’ve done some reading on the BMW boards and its been an issue that’s been noticed for years. Evidently it may have something to do with brake drying. When you turn your wipers on it tightens the pads against the disk.

IDK.

very probable. euro cars tend to implement some sort of brake drying in case of poor weather so that the pad and rotor have the best brake response/emergency braking. not something i've seen advertised on the supra.

 

[Benjilis]

Yeah nothing to video really just a clunk sound and you fell a bump in the pedal on the first couple swings of the wiper.

I’ve done some reading on the BMW boards and its been an issue that’s been noticed for years. Evidently it may have something to do with brake drying. When you turn your wipers on it tightens the pads against the disk.

IDK.

Increased braking with wipers on?
Track guys will love this ?

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