Euros 2009 Offroad 1/10 electric Bilbao: TYRES?

[cyberlarry]

Hi all, i've seen on carbi.net website that the tyres chosen for the Euro2009 are Schumacher Minispike for both front and rear.
My questions are:

- 4WD and 2WD use the same tyres? Ref. U6557 Front and Ref. U6558 Rear ?

- For 2WD the front tyres are Free OR should be used the Minispike front tyre Ref. U6557 (that tyres i think should fit only front 4Wd wheels...?)

- Compund are free, but what is suggested by the track organizers? Yellow?

Thanks in advance to any replies, but the modified Efra rule 3C 3.2 is not very clear for me....