Hello mate. Sorry if I seem thick, but I can't work out how to post a cry for some advice. I have owned a 300TDI Discovery for about five years now. Love it. Unhitched a trailer this afternoon having moved a couple of horses. When I drove off the steering seemed a bit odd. I drove gently on, (very quiet all but private lane) The symptoms are. If I have my foot on the accelerator, the car drives straight, no hands on the wheel, perfect. Take my foot off the gas pedal and it feels as though the rear, wants to overtake the front and I have to steer out of the nearside kerb. I am ignorant but old! Could the rear differential have gone?