Thank you for sharing that knowledge.
And thank you for raising the technical curiosity, because I think urethane or a urethane hybrid compound would be great for tires. Urethane ages much much better compared to current tire compounds.
But maybe this is part of the plan. Tire manufacturers love that tires rot away and fall apart in just a few years even if they do not have many miles on them. But our disposal requirements and issues do not. :)
What I am still wondering is why the cost of urethane has not dropped very much since it was invented. They still charge far too much for urethane products than they should actually cost.
Can’t be much more to mass produce than similar Silicon products I would think? Unless there is a more costlier process I don’t know about. I think there is a greed factor on both counts...