"ourkid2000" <our_kid2000@NOSPAM.hotmail.com> wrote in message
news:ef6jbf$eab$1@news.datemas.de...
> My new Civic has 16" (205/55R/16) aluminum wheels so I think i'm going to
> get some winter rims and tires for it for the comming winter.
>
> I was wondering if I could use 15" wheels & tires instead? If so, what
> size tire should I get to keep the right ratio? Anyone know how I can find
> out? 16 inch low profile winter tires, which would fit right, are just too
> expensive really and there's no need for such tires for the winter.

Try this:
http://www.eunos.com/tirecalc/

-Dave