In most states, it’s illegal to drop off old tires at landfills for disposal. But the good news is that tires are becoming more easily recyclable, being turned into everything from surfacing to new consumer products, and even shredded and used in macadam for roads. When you get new tires at a dealership, your old ones are automatically recycled. But to find out where you can drop off your old treads for recycling if you put them on yourself, use the website earth911.com. All you do is enter your ZIP code and “tires” in the search box, and the site will find the closest recyclers to you.