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100/100-18 tube in a 110/100-18 tire

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Hello friends, 

2 days ago, I was feeling to lazy to check my tire size and I bought two 100/100-18 tubes and then found out (once the package arrived) that my (rear) tire is a 110/100-18. Would these tubes still work? Is it in my better interest to return these tubes and buy the right size? They were bought off Rocky Mountain's website.

thanks in advance

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My friend putted a 18 inch tube in a 21 inch tire once. It stretched but it never gave up.

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Ya take a tube a filler up before putting it cus IMO they are like balloon's.

On another note I've use a 19" and a 21" tube in a couple of different situations in a 18" wheel and they worked fine at least in the short term so buddies could keep riding for a couple of days. I actually carry a light weight tube in my pack as a spare for use front/back in case I really need to change a flat on a ride (heaven forbid) :)

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23 minutes ago, filterx said:

Ya take a tube a filler up before putting it cus IMO they are like balloon's.

On another note I've use a 19" and a 21" tube in a couple of different situations in a 18" wheel and they worked fine at least in the short term so buddies could keep riding for a couple of days. I actually carry a light weight tube in my pack as a spare for use front/back in case I really need to change a flat on a ride (heaven forbid) :)

I've used a 21 on the back wheel before in pinch but just to get home, they always seem to flat out if I ride too hard or too long on them. I think it's the friction from the tube folded up on itself. Definitely good for getting back to staging though.

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20 minutes ago, schrode said:

I've used a 21 on the back wheel before in pinch but just to get home, they always seem to flat out if I ride too hard or too long on them. I think it's the friction from the tube folded up on itself. Definitely good for getting back to staging though.

Ya its a short term thing :)

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