Originally Posted by
fietsbob
sitting on the bike compresses the tire, changing the roll out, circumference ,
so pump up the tires to the proper pressure, and have an assistant,
to have a more accurate number, combine several wheel rotations,
and then divide the number of rotations of the total length..
measure.. the number is ... X"..
most basic.. ride thru a paint blob, [Dog poo is useful too) measure how far apart the next mark
made by the rolling tire of the deposit you rode thru is from the original one.