Braking causes shudder

[Deep Heat]

Hey, today my car started to randomly shudder when I use the brakes, does this mean the rotors are rooted?

[hamish_023]

Were you braking hard? Normal driving? Any noises? only when cornering etc...

[Deep Heat]

After some hard braking try to find the source it went away

[Dropz]

Sounds like they're warped, but then you un-warped them by overheating them again haha.

[JKeep2.5i]

mine seem to shudder only when breaking at higher speeds, so anywhere above 90km/hr my mechanic said its most likely the rotors need to be machined as the pads have been replaced as I had a major service only a month ago, he said it isn't a major problem just a 'do it when you've had enough' ..

[Dropz]

if its only at high speeds it sounds like its just started warping, which can be fixed with a machine. Bad warping can't be fixed by machining it as there's too much variance.

[jslayz]

In m experience, above 90km/hr wobble under brakes means you need the car on a hoist and check your LCAs
In the end this was what was wrong with mine!
Machining rotors helped but putting new LCA's in has completely stopped any wobble.

J

[libz05]

hey guys sorry for the noob question but what does shudder mean ?
thanks in advance

[Kekotic]

hey guys sorry for the noob question but what does shudder mean ?

It means exactly what it sounds like...

Ever shuddered because you are cold? Picture a car doing that while under braking

http://en.wikipedia.org/wiki/Disc_brake#Brake_judder

[JKeep2.5i]

for me my steering wheel shudders abit and you can hear/feel some vibration

[teflon]

In m experience, above 90km/hr wobble under brakes means you need the car on a hoist and check your LCAs
In the end this was what was wrong with mine!
Machining rotors helped but putting new LCA's in has completely stopped any wobble.

J

Same here. Thought it was my rotors but it was the LCAs... Only happened when braking above 80km.

[JKeep2.5i]

In m experience, above 90km/hr wobble under brakes means you need the car on a hoist and check your LCAs
In the end this was what was wrong with mine!
Machining rotors helped but putting new LCA's in has completely stopped any wobble.

J

This could be my problem right there, I don't know alot but what are LCA's??

[Deep Heat]

This could be my problem right there, I don't know alot but what are LCA's??

LCA= Lower control arm

Did you guys need to change the whole LCA or just the bushing?

[teflon]

Arm was fine so just the bushes which I had replaced with the j speed/PhatGT ones.

[seanmau5]

This could be my problem right there, I don't know alot but what are LCA's??

LCA= Lower control arm

Did you guys need to change the whole LCA or just the bushing?

cruisn has alloy LCAs for sale.. Free plug