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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Quality of Inner Tubes
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<blockquote data-quote="Matty" data-source="post: 91372" data-attributes="member: 1339"><p>Have owned my Comet for 61 years now and seem to remember that in the past the tyres maintained pressure for many months.</p><p>Over the last few years however I have found that they rapidly lose pressure - dropping from say 30psi to 20 psi in a couple of weeks.</p><p>I ride the bike most weeks all year round but have to check and re-inflate my tyres most times I take it out !!</p><p>I have renewed the tubes, tyres and pressure caps a few times in the last 10 years or so and hoped that pressure would be maintained, but this has not been so and I have a similar problem with a 1976 Suzuki with tubed tyres.</p><p>Do the tube manufacturers now use some much more porous and probably cheaper material now to make tubes - bearing in mind also that with tubeless tyres now much more common, there is probably less demand for a good product?</p><p>I believed that the tubes I have used were from a reputable manufacturer, but has anyone had a similar problem and then found a manufacturer whose tubes are not porous please?</p><p>Matty</p></blockquote><p></p>
[QUOTE="Matty, post: 91372, member: 1339"] Have owned my Comet for 61 years now and seem to remember that in the past the tyres maintained pressure for many months. Over the last few years however I have found that they rapidly lose pressure - dropping from say 30psi to 20 psi in a couple of weeks. I ride the bike most weeks all year round but have to check and re-inflate my tyres most times I take it out !! I have renewed the tubes, tyres and pressure caps a few times in the last 10 years or so and hoped that pressure would be maintained, but this has not been so and I have a similar problem with a 1976 Suzuki with tubed tyres. Do the tube manufacturers now use some much more porous and probably cheaper material now to make tubes - bearing in mind also that with tubeless tyres now much more common, there is probably less demand for a good product? I believed that the tubes I have used were from a reputable manufacturer, but has anyone had a similar problem and then found a manufacturer whose tubes are not porous please? Matty [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Quality of Inner Tubes
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