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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Since every manufacturing process is proprietary and many of the variables will be different and unknown. Cord angle, cord material, rubber durometer, rubber composition, thickness and tensile properties of both, design tire pressure, traction (i.e., heat buildup), max design rpm (angular velocity), design rim width vs. actual rim width, and tread pattern are a few that come to mind. Without finite data it is doubtful you could quantify so many variables. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Individually testing a SPECIFIC system would be the most successful. Take a few low speed measurements on the stand and extrapolate. A Go-Pro, a calibrated background to measure tire growth against and your precise tach should get your started. All the best.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Apologies if this is already answered. I only get these messages all at once at end of the day. <o:p></o:p></p><p class=MsoNormal><span style='font-family:"Microsoft Sans Serif","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></body></html>