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Anna Nus
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What inner tube to buy for 47 tire size, 650bx47c tires?

I'm pretty new on this and want to buy a spare inner tube. These are my specs of the tires:

  • Tire Size 47
  • Tires Maxxis DTR-1, 650b x 47c
  • Wheel Size 27.5
  • Presta valve

When I'm browsing, I see results like:

  • Inner Tube - 650B/27.5" - 27.5" / 1.5" / 2.4" / Presta
  • 650x28-42 Bike Inner Tube - Presta
  • 27.5" x 1-1/2 (650x35) Presta Tube

but I have no idea what the 1.5"/2.4", 1-1/2 etc mean and which one I should choose. Could you explain or help me out with an example that I could get?

Thanks

Anna Nus
  • 31
  • 1
  • 2