I have been so satisfied by the Vredestein 'Classic Sprint' that I use on my Bristol 409 that I decided to fit 4 Wintrac Xtremes on my Mercedes 320 4 Matic as well

The Giugiaro-designed Wintracs have a very nice thread, deep and well-engineered for the maximum traction

 Vredestein Wintracs have another very good point: their price is lower than the French or Italian rivals'

It looks like this design will allow the snow to get out of the thread easily as well. The test of its efficency on the snow will follow soon....