Front Brakes Judder On Hard Braking

[hardyhardy]

Hi all, went out for a fast spin and tried some hard braking on my Mk3... I can feel a sort of rapid vibration/judder when I do this but its not noticeable at 'sensible braking' speeds. lol

Is this a symptom of warped disks? Or tracking? The guy I got it off claims it had new brakes fitted 6 months ago, so not sure whats going on. Tyre wear seems even though

Any inputs most welcome!

[Nighthawk]

Do you get vibration in the steering or pedal? If the discs/pads are fine it may be the abs kicking in.

Sent from my HUAWEI Ascend P2 using Ford OC mobile app

[gurcayy]

It looks like warped discs. Usually, even the new discs, especially not OEM ones, tend to warp and they need to be grinded on a lathe or machine designed for this. It is also possible to warp the discs if you get through a water after extended use of the brakes.

[hardyhardy]

Do you get vibration in the steering or pedal? If the discs/pads are fine it may be the abs kicking in.

Sent from my HUAWEI Ascend P2 using Ford OC mobile app

Hi yes i feel it in the peddle mostly. But then again, the sterring does feel a bit stiff!! Turning left anyway, maybe I should check tyre pressures

[hardyhardy]

It looks like warped discs. Usually, even the new discs, especially not OEM ones, tend to warp and they need to be grinded on a lathe or machine designed for this. It is also possible to warp the discs if you get through a water after extended use of the brakes.

Cheers, I dont mind replacing them, but how can I tell if they are warped for sure? Jack up and rotate wheel or something?

[mintalkin]

with the wheels removed the runout on the discs can be checked with a dial gauge, it should also be used when fitting discs to ensure the discs are bedded right before use.