We have a set of nearly new snowtires/rims that we took off our Mazda5 before we sold it.  Used for 1 season. I'm pretty sure they fit Mazda 3 as well as Mazda 5.  

I bought them for almost $900 (including shipping), used them only for about 4 months.  I'm selling them for $600.  

Here is a link to the craiglist posting (with pics):  

Thanks!

Wade