Bulk no. Tyres are apparently only 19% natural rubber. Slightly more is synthetic, and the rest… well none of it is good ground up on roads then breathed in. I lived for a while next to a moderately busy road. Feck it…
Bulk no. Tyres are apparently only 19% natural rubber. Slightly more is synthetic, and the rest… well none of it is good ground up on roads then breathed in. I lived for a while next to a moderately busy road. Feck it…