Judder when breaking
- Thread starter birdy_z4
- Start date
Attleborough, Norfolk
birdy_z4 said:
Feel the wheels after a decent drive. If one is hotter then you have a binding brake calliper.
But I'd expect that to be apparent at lower speeds too.
So other things to look at include wheels properly balanced, tyre pressures correct, worn suspension bushes.
A bit of an extreme case, but last year I had serious judder which turned out to be the friction material detached from the pad backing plate on a nearly new pad.
Also if it helps, years ago my dad had a first generation 7 series and the handbook said you should do several hard stops now and again to maintain the disks and remove any glazing etc. that can occur with gentle use over a period. I guess that is less likely with a Z but it can't hurt !
Also if it helps, years ago my dad had a first generation 7 series and the handbook said you should do several hard stops now and again to maintain the disks and remove any glazing etc. that can occur with gentle use over a period. I guess that is less likely with a Z but it can't hurt !
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Thanks all for feedback and suggestions
Balance is ok and perfect the issue only apparent when braking, i will have to get the wheels off to check. The car had new pads fitted when I bought the car.
Doesn’t feel to be pulling when braking which I would expect if front calliper seizing up
Balance is ok and perfect the issue only apparent when braking, i will have to get the wheels off to check. The car had new pads fitted when I bought the car.
Doesn’t feel to be pulling when braking which I would expect if front calliper seizing up
Deepseaskateboard
Senior member
birdy_z4 said:
This happened to me when driving it down the motorway after the lockdown. Essentially, the disks and pads are probably due for a replacement.
I had mine changed and the problem went away.
Euro car parts often have 50% off campaigns on brakes.
Take it out again and recreate the problem, as you are braking release your grip on the steering wheel so you are holding it very lightly.
If the wheel is twitching left and right as you experience the judder then you have warped discs.
In regard to a binding brake you will smell that after a long fast drive, generally a sour acidic smell.
You can test the brakes for binding by driving at around 5 mph on a flat surface, put the car in neutral and allow it to roll to a complete stop. The car should roll smoothly and gently to a stop, any sort of sticking at the moment the car stops indicates a tight brake.
If the wheel is twitching left and right as you experience the judder then you have warped discs.
In regard to a binding brake you will smell that after a long fast drive, generally a sour acidic smell.
You can test the brakes for binding by driving at around 5 mph on a flat surface, put the car in neutral and allow it to roll to a complete stop. The car should roll smoothly and gently to a stop, any sort of sticking at the moment the car stops indicates a tight brake.
I have a judder on my front wheels. Initial thought was warped discs but turned out was the pads or more specifically the metal plate. The outer ears of the plate had started to rust and stick to the caliper so they were not free to move. But if a file and copper grease on the mating points and all is fine.
After getting the electrical gremlins sorted, mot’d and back on the road still have judder, so bought gauge
What do you think ?
Are these warped
https://youtube.com/shorts/uFAlRpVTuhM?feature=share
https://youtube.com/shorts/dCMw105OR5A?feature=share
What do you think ?
Are these warped
https://youtube.com/shorts/uFAlRpVTuhM?feature=share
https://youtube.com/shorts/dCMw105OR5A?feature=share