I created a Track Gear calculator . Give it a try. https://www.dropbox.com/s/ll3sn1vwfhw8clh/Track%20Calculator%20Complete.xlsx
This is really very useful, can't remember if you can change tyre size or not, but good nonetheless.
@TM started
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This is really very useful, can't remember if you can change tyre size or not, but good nonetheless.