Originally Posted by
rpenmanparker
If it was tested and not just the nominal combinations like 53 front/14 rear/23mm tires, what kind of testing did they do to tell that you were really "close"?
It's a roll out measurement of gear inches. I think the process is a measurement of how far the bike moves in one revolution of the crank or something like that. They mark the longest allowed distance (tallest allowed gear) out on the ground and roll the bikes through it.