UHD inner tubes – Ultra Heavy Duty or Useless & Hugely Different?

So, here's my thinking - fit a HD inner tube before starting the trip to minimise punctures. I couldn't believe how much bigger the HD tube is. Here is one next to a normal tube. It's massive.

My concerns now are how it will affect the handling of the bike with so much extra centrifugal force on the wheel. Also I think I've read somewhere that the HD tube is harder to repair. I had planned on fitting the new inner tube when I fitted new tires just before the start of the trip, but that...

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