Could I buy these?
 

Hi
I got a possibility to buy 16x7 ET37 OZ F1 Cup wheels (gunmetal). Like this
http://www.khalita.com/golf/small/CRW_4023.jpg

Do those fit into my -99 Wagon? (ET is what I'm not sure about)

And tire size would be 205/45
Thanks,

They'll fit just fine... If you're sticking with a 16" wheel, why not go to a 50 series tire to help fill the wheel well better?

They will bolt up, but the offset is way off. The lowest offset you should think about using for the wagon is a +42 and that is if you are not lowering it at all. I have a feeling that the +37 on those wheels is not going to work. But Rishie is the "authority" on fitments, so he might know more. Contact him via PM, search for ARD MP5

He has a 99 though not 01+ .. the body style is slighly different so there might be a bit more leeway for offset?
You could try checking Rays website for the Mazdaspeed wheels and see what they suggest for the Sport20 in a 16x7 size. That could be a good hint to what to get.

Ok, I contacted Rishie and he told the offset is too low. Thanks for your help people and especially thanks Rishie.