Brake Vibration

[chris bowman]

ok guys dont do alot of mileage, certainly motorway mileage. i have a mkiii 2.0 tdci on 54 plate and have always had slight vibration on braking from the front as i can feel it thru the steering wheel. every mot including today advises this but passes it because it passes on the brake tester.i am on my second set of tsw discs and pads!

previously it has been mentioned that it could be the hub is buckled, but ive never heard of this. if i jack the wheel off the ground i can feel the run off on the disc if i turn the wheel by hand. i am thinking of marking the hub in the centre of the disc and turning the disc a couple of studs on the hub then putting the calliper back on. then i can jack the front up and see if the run off point has moved or if it is in the same place. this would then confirm whether or not the disc or the hub is at fault

any thoughts as i think i need to try and diagnose this problem before risking another otherwise perfectly good discs and pads,

[cuke]

Hi, is the flange, can't think of a better word, that the discs sit on clean with no rust or anything else that could make the discs not run true? Have you checked all of the suspension components, bushes etc?

Chris

[chris bowman]

yeah motd last week and being a mate of mine i got the examiner to give that corner extra grief with the old tyre bar to make sure everything is ok and it was. could feel the run off in the disc when turning the wheel by hand. i thought i had given the hub a damn good clean when i fitted the discs a couple of months ago. just never had 2 consecutive bad discs warped particularly on the same side before. rac man has shown me how to clamp a decent set square to the calliper resting on the disc and to turn the disc to the run off point. then i can use feeler guage to measure the run off amount.will use the calliper carrier to do the same with the hub i think.