[s-cars] Late Winter Tire question...

[The Rogue]

When I puchased my car last year it came with 17" mags and a set of
original Audi rims with tires for winter use. Since last winter the car
was at the doctors for open heart surgery. I never got a chance to try
the thing in snow :(

I installed the winter rims last month and noticed that they were 15"
rims.....didn't the S4 come with 16" Audi rims?

Then I noticed that the tires were a bit bigger....225/70R15....and that
they rub a bit when turning! Hence no fun in snow yet...and turning with
a larger radius so nothing breaks.

I guess that since i'm stuck with my 15 inchers instead of 16's for
winter, what would be your tire sugestions?
What size? What brand?

I need to replace the ones that are on now, before I rip off a side
panel with ice!

Thanks
JF Beriault