Alarm surrounding the air quality and climate effects of tailpipe emissions have led to a recent focus on electrifying our transportation. However, recent research has revealed that tailpipe emissions may be little cause for concern when compared to the emissions that come from our tires. After noticing an increase in salmon fatalities during rainfall, researchers discovered the culprit: a chemical compound known as 6PPD, which is added to tires to prevent cracking. This compound, along with the 400 other chemicals and compounds in tires, has devastating effects on our environment.

Tires are full of heavy metals, chemicals, and synthetic and natural rubber materials. It is estimated that over ¾ of microplastics in the ocean are microrubbers from tires. With billions of tires sold every year, it makes sense that the fragments shed with each rotation of a tire would create a large impact on the environment. It is estimated that tires generate up to 6 million tons of microrubbers a year worldwide. And because of their heavier weight, electric vehicles – although they don’t contribute tailpipe emissions – produce 20% more tire emissions than fossil-fuel powered vehicles.

Some microrubbers – small enough to be classified as nanorubbers – are so tiny that they can cross our brain-blood barrier when inhaled or ingested. The effects of nanorubbers on our bodies is still being researched, but some evidence shows that nanorubbers can cause developmental, heart, lung, and reproductive problems. In oceans, the ingestion of microrubbers by marine life can also have severe consequences.

Environmental groups, indigenous communities, and even the California Environmental Protection Agency are speaking up about the danger of tire emissions. Some companies are looking into more natural alternatives to the chemical compounds in tires, including rubber from dandelions or soy oil. A potential solution for mitigating tire pollution is rain gardens; studies have shown that rain gardens can capture almost all rubber fragments from stormwater.

So what can you do? It may seem hopeless, with the fight to lower tailpipe emissions just taking off, and this new emissions culprit just being discovered. We can start by driving less; taking the bus or carpooling, and walking or biking whenever possible to decrease your mileage. You can also get involved by spreading the word about tire emissions, as many people are unaware of the dangers they cause to us and our environment. Just like the fight to reduce our tailpipe emissions, we need to spread awareness in order to make change and create a better, safer world. This Green Tip sourced information from “Road Hazard: Evidence Mounts on Toxic Pollution from Tires” from Yale Environment 360.

https://e360.yale.edu/features/tire-pollution-toxic-chemicals#:~:text=Recent%20studies%20show%20that%20the,have%20significantly%20reduced%20those%20emissions

By Chelsea Hafer