Inner Tube Sizes

sonny73 Posts: 2,203
edited September 2009 in Workshop
I have been riding way long enough that I should really know the answer to what I am about ask, but I just don’t' know :oops:

Just changed my inner tube that was a 700 x 20/28 for a 700 x 18/25. This means my front is now a 20/28 and my back a 18/25.

I just didn't check the tube when I bought it and I've always used the same size before, so is this ok?


  • Yes
    Help I'm Being Oppressed
  • sonny73
    sonny73 Posts: 2,203

    Smashing, cheers :D
    And just read an article that explains the 18/25 or 20/28 is the range of tire diameter the tube can work with :oops: obvious really :oops: