The study notes that around 1,100 lbs of battery weight can “result in tire emissions that are almost 400 times greater than real-world tailpipe emissions, everything else being equal.” It’s worth noting, however, that the report goes on to say a light-footed EV driver and regenerative braking can negate the tire wear emissions “from the additional weight of their vehicle, to achieve lower tire wear than an internal combustion engine vehicle driven badly.”
At this point, we should discuss the difference between tire and tailpipe emissions. The former, according to the study, is said to go straight to soil and water, while the latter is often suspended in the atmosphere for longer periods, reducing air quality. Interestingly, 11% of tire emissions are smaller than 2.5 microns in diameter, which is the “common metric for fine particle dust.”
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