At Tyres.co.uk, you can find Michelin Agilis 3 or Goodyear EfficientGrip Cargo 2 for the W639 early models’ original equipment size in 205/65 R16C 107/105T fitment. Keep in mind that the Viano wheel options have different approved sizes and varying load and speed rating requirements. Please refer to the label on your Viano’s fuel-filler flap for more details.
Tyre sizes for the Viano can be found in the vehicle specific tyre information printed on the tyres and the vehicle specific tyre information is inside the fuel filler flap: check the label on the fuel cap and the handbook.
Replacing all four tyres at once is not necessary on the Mercedes Viano. Individual tyre replacement must be the same make, same size, and same type. For the Mercedes Viano 4MATIC versions, all four tyres must share the same rolling circumference and traction characteristics. It is recommended in the UK to position the new tyres on the rear axle, if only two tyres will be replaced.