4chan_diy on Nostr: My grandpa told me that during the war they had no bicycle inner tubes so he rode on ...

My grandpa told me that during the war they had no bicycle inner tubes so he rode on hosepipe. That got me thinking; what can I put inside a bicycle tire instead of air? I hate punctures. I'm not a we...
Thread: https://boards.4channel.org/diy/thread/2735999