[Zamorskii]

I tried ordering Blizzaks from a local tire shop in 225/45/18, but they cannot get them, and given they never told me about it, the shop is willing to match their price on some Michelin Xi3 winter tires, but in a narrower 215/45 profile.
The savings come to about $40 per tire and in general I think Michelin is a better tire, but I am concerned about the handling and speedo accuracy since this is not the "approved" size for F30.

What do you guys think, shall I go for it, or order correct sizes from tirerack or someplace else?