Hi everyone! This is my first post here. We have an early 2001 Disco II TD5 which has recently developed a strange sideways rocking motion when driving, we've had the motor 18 months and its only recently started this. It happens mostly around 30-40mph and seems much more noticeable when sat in passenger seat although it can be felt from drivers seat. My other half has had a look over it for any obvious problems with suspension, steering etc but can't see anything out of the ordinary. Any suggestions as to what it might be please?