silverbird1100 Posted August 1, 2006 Share Posted August 1, 2006 How much if any moisture would you have to have inside a tire to effect the expansion of the air? What if your tire was getting hot enough to get the little rubber balls on the center of the tire? Quote Link to comment Share on other sites More sharing options...
jcrich Posted August 1, 2006 Share Posted August 1, 2006 I would think it would have to do more with what your tire pressure is. Low pressure will cause the tire to run hotter and create the condition you describe. Quote Link to comment Share on other sites More sharing options...
silverbird1100 Posted August 1, 2006 Author Share Posted August 1, 2006 I doubt it has anything to do with moisure, just wanted to see but that was hapenning at 41psi on a calibrated guage. Quote Link to comment Share on other sites More sharing options...
shovelstrokeed Posted August 2, 2006 Share Posted August 2, 2006 The moisture, so long as it remains a vapor, will have very little effect in terms of pressure change. It still has to obey the gas laws. If it condenses into a liquid its impact can be significant. External tread temperature can be very different from internal temperatures. The former is influenced by fricition with the road and flexure of the tread rubber (hysterisis). The latter, more by carcass flex and changes in ambient temperature than anything else. Friend of mine on another board has all sorts of neat engineering software available and did the calculations once in response to a similar question. You really have to get to saturation before the effect of internal moisture starts to add more than a tenth of a percent or so to the temperature induced pressure rise. Quote Link to comment Share on other sites More sharing options...
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