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Schwalbe Tube-Presta Valve
SV4-16x1 1/8-18x 1 1/8 SV6-20x1 1/8-20x1.5 SV7-20x1.5-2.5 SV12A-26x1-1.5 SV13-26x1.5-2.5 SV15-27x7/8,28 x 3/4-1.10 (700 x 18C,20C,22C,23C,25C,28C) SV16- 28 x 1 5/8 x 1 1/8 28 x 1.20 28 x 1 5/8 x 1 1/4 27 x 1 1/4, Fifty 27 x 1 1/4 (700 x 28C,30C,32C)
Share your comments below: What size tube do I need for a 20x1.75 tire? I am still using the original tubes (6 yrs now) because I can't get presta valve tubes locally. I bought a set of 20x1.75 presta valve tubes via the internet 2 years ago and they were waaay too big. Don't want to make the same mistake and I really need new tubes. Posted by officialmom 03/17/2011 03:45:27 PM You would want the sv7. Ashley, We have Cruisers by terra trike and have been fighting with our LBS, they say to use 20X1.25-1.50 PV tubes they sold me 6 of them and I don't think this is right. what should we do? Posted by What's up Doc 12/12/2011 03:56:09 PM The Cruisers come stock with 1.5 tires, so those tubes will work. But, they will be at their maximum size and offer less puncture resistance. For a 1.5 tire I would recommend a tube like the SV7 which starts at 1.5 and goes bigger. That way you have more rubber and more protection.
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