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[fuz1903]

My MV6 has developed a wooble coming up through the steering wheel, but only when I brake at a certain hardness and road speed  
 
Anyone have any ideas?
 
First thoughts are wheel balance, Tracking and Camber alignment but surely this would produce the wooble at all times or at particular road speed not just when braking?

[Dave-C]

Discs warped...  even a damaged tyre?

[STMO123]

Now that I think about it, I had something similar about a year ago. Wheel balance cured it.

[Dave-C]

Have you kerbed it?  If it's discs,  VX do a kit of 2 discs and 4 pads for £70 ish genuine GM...

DC

[fuz1903]

Front tyres new March so about 5000 miles old balance and tracking done then.
Have hit no kerbs, but with the state of the roads nowadays probably plenty of potholes etc but nothing major.

What would cause the discs to warp?

[Kevin Wood]

What would cause the discs to warp?

They get a little out of round as they wear, IME. Cheap motor factor parts far more so than OEM ones so it pays to get quality replacements.

If the disks are relatively worn I'd replace disks and pads, or put up with it until the pads need doing if it's not too bad.

Kevin

[luv_my_mv6]

I have a warped disk on my front n/s, with wheel off if I turn the disk by hand I can feel the disk bite the pads slightly on one half, and if im on motorway, or using brakes heavily, the steering wobbles like crazy - they arnt that noticable when the disks are cold.
 Cheapo disks tend to warp very easily (mine are only about 800 miles old and one gone already)

[Craig_R]

False economy buying 3rd party Discs get VX ones have alook on Ebay they pop up new from time to time i got mine on there brand new for £40 and brand new front and rear VX pads and Brake sensors for £20

[Dave-C]

Front tyres new March so about 1: 5000 miles old balance and tracking done then.
Have hit no kerbs, but with the state of the roads nowadays probably plenty of potholes etc but nothing major.

2:What would cause the discs to warp?[/quote]

1:Ready for rebalancing if you ask me!  First....

2:Hot discs, maybe a caliper sticking causing a bit of binding on a disc...

DC

[geoff]

sounds like brake discs on the front ,my discs went the same four year ago,now they are starting to do it again but not as bad

[Mike Collins]

While you have the calipers off, worth checking the sliding pins are free and lubricated, that gave me strange shudders.

[Dave-C]

While you have the calipers off, worth checking the sliding pins are free and lubricated, that gave me strange shudders.

Try eating raw chillies then!

[TheBoy]

Don't rule out wear in suspension/steering, esp steering idler arm.

Pattern discs really did not suit my MV6, they are awful. Genuines going on as soon as I've worn the pads down.