A rubber torus shaped balloon which is inflated via a valve inside a tyre to keep it rigid.

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Presta valve won't let air in on a new tube

During a ride I had a flat tire and used a brand new Joe's tube with sealant. For the first time in many years of riding i was not able to pump air in. It appears that the pin inside the valve won't ...
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vote
2answers
187 views

back tire keeps going down

I have just bought a new bike and had it about a month now. I don't really know much about bikes but I do know how to repair an inner tube. I have had one puncture and just bought a new inner tube. ...
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Bumpy ride. Is it the casing or the inner tube?

I pumped a new tube to about 80 psi (I missed that on the casing the recommended pressure is 100 psi). On the ride immediatly, I hit a very small kerb harder than I wished and after I noticed that my ...