I own a brand new (less than 2K miles) VW Touareg 2.4L V8 that came with German made Continental 275/45 R19 Y, summer performance tires. What are summer performance tires? I live in eastern NC and we don't typically receive much snow. When replacement time comes would an all-weather tire be a better option? From just checking around I've discovered that 19" tire selections are not very plentiful. Thanks in advance for advice. I'm new at this.