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Ideal Gas equation: pV=nRT With +15oC and -20oC the pressure ratio between the two is: p1/p2 = (273+15)/(273-20). Or 13% higher pressure when put in the garage. However that is assuming you are pumping it to maximum pressure, that the tyre can no longer (or very slightly) expand, making V (volume) constant. That is the basics for your assumption. ...


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Hit the tires with a bush and some concentrated soap. In the dark shine a light on them and you would be surprised how much they shine even if they look dirty. Once you scuff em up bad then just time for new tires.


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The right answer to this (as with all tire pressure questions) is try it out as the sidewall ratings (and anyone else who gives you an answer with a number in it) is likely giving you nonsense. In fact, you should not be near the max sidewall rating in winter (or in summer) in most cases and thus this is not something you should be worrying about if your ...


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Most likely not. Most frames with caliper brakes can at a maximum take a 28 or really narrow and slick 30 (assuming a modern short reach caliper). A nobby tire will almost certainly not fit regardless of size. if there's a lot of clearance currently ( > 1cm), I would take it to your lbs and check with them.


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Winterize your freehub body. This kind of failure is common in colder temperatures and a hub acting like this should not be ridden. In addition to the safety issue, you can destroy your freehub with partial engagement. The freehub needs to be disassembled, the factory grease cleaned out of it and regreased with a winter weight grease.



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