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-1

Had the same problem—the trick is that the threaded sleeve at the very tip of the valve needs to be unthreaded and floating free in order for the valve to work under the pressure of incoming pumped air. So the order of operation is: valve cap off ensure the valve stem collar nut is seated snug against the surface of the wheel spin the tiny threaded sleeve ...


3

The hardest to fit tyres I've ever dealt with were continental comfort contact (and I run marathon plus which are reputed to be difficult). Like yours they needed serious overpressure to seat, even after wetting the rim. After several years fitted they're still going strong. I had to change a tube in one recently and it was much easier but still hard to ...


6

Those strings are quite common with continental tires and seem to be a part of their manufacturing process. Every continental tire I have owned seem to have some of those threads, even ones that mounted relatively easily. I just cut them off and have never had an issue with them. Continental tires are also well known for their tight beads. The high-pressure ...



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