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Presumably they meant 5.8 milligrams/km rather than grams - thats 290 grams over 50,000km.

The following literature review(2014) mentions an estimate of 0.1-10% tyre wear becoming airborne - because the majority is relatively large particles:

https://publications.jrc.ec.europa.eu/repository/bitstream/J...




They must have meant grams because that is the basis of their 1000X statistic. The other number is also single digit but is in milligrams.

That doesn't mean they're right, but it's the only way I can interpret what they're saying.


But 4.5g/km implies 225kg after 50000 km which doesn’t seem possible. Something definitely smells fishy.


That seems to be some heavy tyres, that's for sure.




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