Sticky tires are dirtier than they look
California is proposing new tire regulations aimed at reducing rolling resistance to improve fuel efficiency and reduce emissions. The rules would restrict the sale of tires that do not meet performance standards, with some exemptions for low-volume and specialty tires. While these regulations target average consumers, they may impact enthusiasts who prefer high-performance tires.
- ▪The proposed rules aim to reduce rolling resistance in replacement tires.
- ▪Tires that do not meet the performance standard will not be eligible for sale in California.
- ▪Exemptions exist for certain tire models, including those with low sales and specific types like motorcycle and snow tires.
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Sticky tires are dirtier than they look Jason Weisberger 10:45 am Wed Jun 3, 2026 Photo: Jose Luis Stephens / Shutterstock California's proposed replacement-tire rules are aimed at reducing rolling resistance, which is exactly the boring technical phrase that matters here. A tire that takes more energy to roll makes a gas car burn more fuel or an EV use more battery. Softer, stickier compounds can also wear faster, shedding more tire particles into the air, soil, and water. That is not "fun." That is a consumable pollution source with a fan club. As it stands, the legislation is clear: Tires that don't meet the performance standard won't be eligible for sale in California.
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