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The Michelin airless tire is getting close.. (still uses rubber but not nearly as much as conventional tires) https://michelinmedia.com/michelin-uptis/ https:/

• excursionist 7y ago
  I'm not sure how this helps. The amount of rubber used is not as important as the surface area being deteriorated, which doesn't seem to be any different from conventional tires.
• miahi 7y ago
  It uses the same amount of rubber on the part that matters for the subject. The microplastics in this case are not caused by the total rubber content, but the rubber that is lost through road wear, and that will be the same on the airless tires, as it cannot be changed without impacting the grip (or the cars will have the same problems as the trains discussed above - huge stopping distance, unable to go up a >2% slope without special tricks).
• manigandham 7y ago
  They've been working on this for decades already, with the Tweel getting some attention in 2005: https://en.wikipedia.org/wiki/Tweel https://en.wikipedia.org/wiki/Tweel It'll be a long time still before this actually gets to any kind of production use, unless regulation steps in.