My car has always done these two things it. 1. If i'm a bit heavy especially on the greasy/wet roads at the moment I get this kind of small grinding noise from the front for a brief second as the wheels start to spin (at very low speeds). It's not the wheels spinning making the noise, but it only last for a very short time- any ideas? 2. The first time the car is switch on once I move past about 15-20MPH I hear a clicking/grinding type noise for a second. This doesn't repeat when you slow down and start moving again. It sounds like something is activating once I get above 15-20mph- any ideas? I don't have traction control BTW.