Mk1 or Mk2 wheel size

[mallorcabob]

Hi all,
Have just joined the club as about to pick up a old family owned Windrush (specific model unsure) in France and drive it to Spain. 
problem is I don't know the wheel size but do know that the old tyres are perished.
Would like to purchase the new tyres in the UK to save time hunting for them in France - can anybody assist with the wheel/tyre specifications please?
Thanks in advance
Bob

[adz]

Hi there, did u find out what the wheel spec is? I have the same problem! Any help appreciated, cheers!