Yes, rubber tires can be recycled, and they’re actually one of the most recycled consumer products in existence. In 2023, 79% of end-of-life tires in the United States were reclaimed or recycled into beneficial uses, up from 71% just two years earlier. Those old tires get turned into everything from road surfaces and playground material to fuel for industrial furnaces, though the process looks very different from tossing a plastic bottle into a blue bin.
Where Old Tires Actually End Up
Tires don’t go through the kind of single-stream recycling most people picture. Instead, they’re diverted into several distinct pathways depending on what they’ll become. The largest share, roughly 130 million scrap tires per year in the U.S., gets burned as fuel. The cement industry alone consumes about 53 million tires annually, followed by pulp and paper mills at 26 million and electric utilities at 24 million. Tires produce the same energy as oil and 25% more energy than coal, which makes them a surprisingly efficient fuel source for heavy industry.
The remaining tires are mechanically processed into rubber granules or chips and channeled into construction, sports surfaces, molded products, and road paving. A smaller but growing share goes through chemical recycling processes like pyrolysis, which breaks tires down into their component materials.
How Tires Are Broken Down
Recycling a tire starts with shredding it and separating the steel belts and textile fibers from the rubber. From there, two main grinding methods produce the crumb rubber used in most applications. Ambient grinding shreds rubber at room temperature, producing coarser particles. Cryogenic grinding freezes the rubber until it becomes brittle, then shatters it into finer, more uniform particles. The cryogenic method yields higher-quality material, making it better suited for products that demand consistency.
Pyrolysis takes a completely different approach. Instead of grinding, it heats tires in an oxygen-free chamber, breaking the rubber down into its chemical components. A typical run yields about 43 to 47% oil, 36 to 39% recovered carbon black, 10% steel, and 5 to 6% gas. The oil can substitute for petroleum products, and the carbon black can be fed back into manufacturing. The challenge is cost: pyrolysis plants are expensive to operate and maintain, and the market for their outputs is still developing.
Rubberized Roads and Construction
One of the most established uses for recycled tire rubber is in road paving. Rubberized asphalt concrete blends crumb rubber into traditional asphalt, and the results are measurable. Roads paved with rubberized asphalt are more resistant to cracking, provide better skid resistance, and reduce tire noise. California’s recycling agency reports that rubberized asphalt overlays maintained about a 5-decibel noise reduction years after paving, while conventional overlays lost their noise benefit over time. The pavement also lasts longer, which means less frequent repaving and lower maintenance costs.
In civil engineering, shredded tires are used as a lightweight fill material called tire-derived aggregate. Because it weighs far less than soil or gravel, it’s useful in situations where the ground can’t support heavy loads, like building embankments over soft soil or reducing pressure behind retaining walls. This isn’t a niche application. It has been used for several decades and is chosen primarily for practical engineering reasons, not just environmental ones.
Safety of Crumb Rubber in Fields and Playgrounds
Crumb rubber is widely used as infill in synthetic turf fields and as surfacing for playgrounds, which has raised questions about whether the chemicals in old tires pose health risks. A federal study led by the EPA tested for metals, volatile organic compounds, and other chemicals in tire crumb rubber, then measured actual exposure levels in people playing on the fields.
The findings were largely reassuring. For many chemicals detected during active outdoor play, air concentrations were no different from background levels. Only small amounts of most organic chemicals were released from the crumb rubber into the air. For metals, less than 1 to 3% leached into simulated biological fluids, compared to a worst-case assumption of 100%. Blood metal levels in study participants were similar to those in the general population, and urine tests showed no difference in exposure to certain combustion-related chemicals between people using synthetic turf and those using grass fields. Indoor fields did show higher concentrations of some chemicals in the air than outdoor fields, likely due to reduced ventilation.
What You Pay at the Store
When you buy new tires, you’ll typically see a small recycling or disposal fee on the invoice. In California, for example, the state charges $1.75 per new tire purchased, collected by the retailer at the point of sale. The fee must be listed as a separate line item on your receipt, distinct from any other disposal charges the shop might add. Most states have similar programs, though the exact amount varies. These fees fund the collection and processing infrastructure that keeps old tires out of landfills and illegal dump sites.
Why 100% Recycling Remains Difficult
Despite strong recovery rates, about one in five scrap tires still doesn’t reach a beneficial use. The reasons are both technical and economic. Tires are engineered to resist degradation, which is exactly what makes them hard to break apart and reuse. Roughly 75% of a tire’s composition is rubber that has been chemically cross-linked during manufacturing, a process called vulcanization. Reversing that process well enough to produce material comparable to virgin rubber remains a significant hurdle. When recycled rubber is blended into new tires, the resulting product tends to have lower tensile strength, reduced elasticity, and longer manufacturing times.
Logistics add another layer of difficulty. Collecting tires from scattered locations and transporting them to processing facilities is expensive, especially in rural or low-population areas where the volumes don’t justify dedicated routes. And even when recycled materials are produced successfully, they need buyers. Markets for secondary rubber products are still undersized relative to the supply, and many recycled tire products compete on price with cheaper virgin materials. Without stronger economic incentives or tax benefits for secondary materials, the gap between what’s technically possible and what’s commercially viable persists.
The tire industry has made real progress. Recovery rates have climbed steadily, and the range of applications keeps expanding. But closing that last 20% will require better processing technology, more robust markets for recycled outputs, and policies that make secondary materials more competitive with new ones.