VT II Auto Braking / High speed shake.

[Tsunamix]

OK. Under breaking I get a shake through the steering wheel - a little left right movement - 1/2 a cm or so. There is no pulsing in the brake pedal.

Discs were machined about a year ago, decent pads.

Also I have a vibration that creeps in at about 120KMH. Feels like I have an out of round tyre or something. Had a full wheel balance done. It reduced it much it's still apparent.

I've thinking that maybe its the prop shaft bearings or something.

Anyone else have any ideas ?

I plan on fitting slotted dba rotors soon, and braided brake lines to get some pedal feel.

If anyone else can think of something worth checking, I'd appreciate it.

Cheers

[jas98]

my VS has started to do the same and i was thinking the center bearing in the tail shaft (as u said)

[svill]

my car and my bros VT do the same...at high speeds 100+ is it that much of a worry?

[Tsunamix]

Im thinking that its going to be a warped rear disc.

Whats happening is that the movement in the floating disc is changing the balance of the the entire rotating wheel assembly, not just the wheel.

I thought long and hard about driveshaft bearings, but driveshaft bearing problems should (theoretically) be more apparent at low speeds than high. Also I replaced my prop shaft bearings about 2 years ago, and the should still be ok. Should being the operative word.

I have bought a full set of slotted discs and new pads, and will fit them probably between christmas and new years. Will post back so people get the result.