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700x38 change to 29x1.9/700x48 new tubes?

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700x38 change to 29x1.9/700x48 new tubes?

Old 10-25-14, 10:46 AM
John Redcorn
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700x38 change to 29x1.9/700x48, Do I need new tubes?

I just ordered some 29x1.9 geax evolution II tires for my '14 crosstrail disc, came with 700x38 tires. I just wanted a bit bigger.

When I bought the bike I bought a spare tube, specialized brand, on the box says good for 700x35-45. I'm guessing same as what's in my stock tires. Is this close enough? or should I get 3 new tubes?

Last edited by John Redcorn; 10-25-14 at 10:53 AM.
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Old 10-25-14, 12:09 PM
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Inner Tubes are like Balloons ..
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