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performance axiom 8.0 wireless(4 posts)

performance axiom 8.0 wirelesststamm
Oct 11, 2001 1:41 PM
I just purchased the axiom wireless from performance and I don't know what wheel circumference to enter into the computer. I have 700 x 23 tires, I tried the rolling method but my measurement seems to be way off 2115, can anyone help, thanks
re: performance axiom 8.0 wirelessBIGBOB
Oct 12, 2001 7:04 AM
I have the same model and find it very reliable and accurate. Use the rollout method they describe in the instructions, it is most accurate. The suggestions they provide for sizes are just that....suggestions. All tire sizes from different manuf. are not equal. Several people that I ride with who also used the rollout method and myself are all within a few tenths of each other after 15 miles or more.

Bob
re: performance axiom 8.0 wirelesststamm
Oct 12, 2001 8:16 AM
what size tires do you have, what was the measurement you came up with?
re: performance axiom 8.0 wirelessBIGBOB
Oct 15, 2001 10:36 AM
I don't recall the exact measurement, but I recall that it was about 25mm different. I just measured the rollout to the nearest eighth inch and multiplied by 25.4 to obtain the figure to enter. The tire size on my bike is 700x23. Just remember to enter the eighth's in decimal format into the calculator. An eighth = .125" Example: 115 3/8" equals 115.375" . In this example the figure to enter would be 2930. Hope this helps........Bob