Ford Focus and juddering

[RadarBailey]

I have a 03 plate Ford Focus diesel. The vehicle has started to judder when I go over 30 MPH. I’ve been told it could be the tracking or the brake discs. When I stop the vehicle the right hand wheel is really hot and smells of burning. Could it be that the callipers are jammed, if so what can I do?

Thanks

 

[^neo^]

Id say a sticking caliper as you suggest.
Best bet is a reconditioned one. You can screw around trying to free it, but usually more hassle than it's worth.
New discs and pads too while you're at it, and check the wheel bearing is ok and has grease as a sticky caliper can burn the grease away from the heat

 

[Peter.N.]

I would concur

 

[keyplayer]

Could also be a collapsed brake hose. Very common.