Inner tubes question

[tortoise]

This might be a really stupid question

I've just bought a new bike and the spare inner tubes that came with it are 26 x 1.75 - 2.35. The inner tubes for my old bike are 26 x 1.5 - 2.2 and I've still got quite a few spares left. Can I use the spares from the old bike on the new one? How critical is it to use the right size inner tube?

[Arnie]

See last post in this thread. You should be ok with them i think

northwalesmtb.proboards.com/index.cgi?board=generalchat&action=display&thread=2107

[martinw]

You'll be fine, What size tyres are you using?

[tortoise]

My tyres say 26 x 49/52, I assume that means 26 x 1.9-2 inches?