Many sources cite that the tires last about 30,000 miles. Assuming that you drive 10,000 miles per year, this means that the tires will only last you for about three years. However, per a Tesla sales agent, they can last as little as 18,000 miles or about 25,000 miles before they need replacing.
To get more life out of your tires, rotate them every 6,250 miles and keep the tire pressure inflated to the pressures shown on the Tire and Loading Information label located on the center door pillar. In addition, Tesla recommends that if you need to replace one tire, you should replace them all.