All vehicles that drive in extreme winter conditions need winter tires. There is no way around that. Summer tires are designed for summer weather; they are not designed for snow, ice and slush. They are not even designed for being used at freezing temperatures. You can’t expect an SUV to perform well in winter without equipping it with a set of SUV winter tires.
Don’t make the mistake and think that rugged summer tires will do the job. You will most likely end up with a bad result. If your tires are not winter approved, then buy a set that are.