Winter Tires

[Mauro (Dynamic)]

I know Goodyear Duratrack but here in Europe they are quite impossible to find
So I asked in some American sites but there some difficulties there too. Now I'll try to contact tiretrack.

I can choose beetween holding my 17" wheels with tires size 315/70 R17 (BFG AT mounted) or changing buying the original 2009 Hummer H2's wheels of 20" with 315/60 tires, what's the better choice ?

Can you suggest some other alternatives tires (for both the sizes) ?

Thank you for the help !