Scrap tires are not treated as hazardous wastes. However, once a tire is burned, tires break down into hazardous compounds including gasses, heavy metals, and oils. Most states have passed scrap tire regulations requiring proper management.
Waste tires present environmental and health hazards. Recently, stagnant rainwater accumulating in old tires has been correlated to mosquitoes transmitting West Nile Virus. Tires are also flammable and can burn for weeks, causing them to decompose into oil which leaches into the ground.
Used tire recycling – Visit the PA Department of Environmental Protection