I have a quattro A4 & a old 2 wheel drive A6. The latter has been transformed by a pair of Kingpin Snow & Mud tyres. They are cheap at £30 each and have transformed the car. It is now better in the snow & ice than the quattro. The tyres are amazing, they are soft and better put on station down(Like a tractor tyre). The only down side is that the bigest size is for 16 inch rims.