[Q] Brake issue

Hi all,

So all the little problems that keep popping up are all getting solved one after the other.

Todays issue is, I went to get the car wheels rebalanced as they were slightly off. All wheels and tyres are in very good nick and are all straight. Now when I brake at high speed, I do feel very marginal vibration, but between 30-40mph specifically, there is quite a lot of vibration through the whole car. The wheel doesnt 'shake' but I can feel vibration.

All the brakes where changed a few months ago on all the corners. I havent had this issue before, but the vibration did start a few weeks prior to getting the balance done (I just thought it was all down to the imbalanced wheels).

I have not tracked the car, not had to do any heavy or hard braking at all and I understand that you dont 'warp' discs, but could the fact that I do a lot of motorway miles (90% of all my driving is motorway commuting) and have to stop quite often at each end due to traffic, and having an auto causing me to hold the car on brakes (I sometimes put it in neutral but more often than not I leave it in gear), have any affect on the brakes?

Any suggestions on fixes? I will try to get some time to put it up on the ramp and pull the brakes off and give the pads a wire brushing and the discs a clean.

Thanks guys. Will be doing a long trip to Scotland in a month for new year, so want the car sorted by then so my wife will be happy driving some.

hmm... I did watch the guy doing it (was quite interesting to watch actually!) using a computer controlled balancing system which told him exactly where to put all the weights. I will probably pop back up when I can (hopefully this friday) and give it a go. Could any other causes have these symptoms?

There were vibrations prior to balancing, however I dont think they were as bad as they are now. Its difficult to tell as the balancing did make a good difference. Now its just braking (but sometimes not always!) when the vibrations come. The bearing of the front left was changed (I havnt checked the work though as yet) recently. Could this have caused it?

I guess its worth putting on the lift fairly soon.

One screw has snapped leaving part in the hole. The other 3 are all there.

No. It's definitely more of a wobble than that. The bearings are now pretty good.