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Also yours in 19 inch mode isn't accurate as it needs to be in 17 inch for TBR7
I bought several in China and fitted them to bikes while in the USA and the 3 fixed point of wheel size was just like yours and accurate but not the 19 inch.
the system of trimming the circumference of the tyre is best so no matter what wheel size 14 - 22 inch it will always and can always be set perfectly within 1%
Storm isn't all too complex once you have the right meter, extra loom part and gear switch etc
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