Q3. Have you tried TPU inner tubes? What do you think of them?
(They are made of polyurethane plastic that is lighter than standard butyl rubber tubes)
https://commons.wikimedia.org/wiki/File:TPU_vs._butyl_inner_tubes_07.jpg
Q3. Have you tried TPU inner tubes? What do you think of them?
(They are made of polyurethane plastic that is lighter than standard butyl rubber tubes)
https://commons.wikimedia.org/wiki/File:TPU_vs._butyl_inner_tubes_07.jpg
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