I've noticed this happening often mainly in the wet during normal city driving, pulling away from traffic lights and stops. I can feel a little rumble from the front of the car until the tyres pick up. If I pull away slower it doesn't happen. Now, these tyres have been on the car nearly 2 years when I bought them, embarrassingly yes they are budgets but I had only just bought the car and as such paid for 4 new tyres. They have about 3mm of tread left on the fronts, the back about 5mm.
I have a 1.9tdi Quattro, and the can feel the rear picking up going around bends and roundabouts and I can always remember the wheels never spinning when pulling away in the wet. So my question is, is this purely down the front tyres needing replacing?