Can someone give me advice on whether to purchase snow tires for a Mazda 3 Hatch? I live in Wisconsin, but I've been told the all weather tires that came with the car should be fine. Advice please?

 

Are they all weather tires or all season tires.
There is a difference.
If it has a snowflake symbol on it, then the are all weather (pics below) if not, then they suck and are all season tires (actually 3 season tires).
If it has the symbol on the tire, then you are good, if not you are not good.

If you are still not sure, tell us the make and model of the tire (written on it).





These are really good all weather tires

 

Try tirerack. I was using 16 inch steel wheels with blizzaks on them On a speed 3. If they fit over those brakes should fit over yours. Was in Cleveland OH. at the time. Car was like a tank in the snow. Probably more expensive now but it about 5 or 6 hundred some years back when I got them. Not bad considering you are rotating wheel sets through the year and don't need to replace tires as much. New wheels without the sensor in them will cause the dash light to go on. Switching back to the oem wheels will fix that.