Originally Posted by
plumberroy
I took wheel size from instructions on the bike computer.
That number is usually fairly close. But things like the actual tire and pressure might mean that's not quite the correct number.
Originally Posted by
plumberroy
I do know they are at least consistent as I have 2 of the same computer on bikes with 2 different wheel sizes and the read the same with in a few 1/100ths on both bikes . I ride the same trail a lot with both bikes. But I have 3 bikes without a computer. I am trying to simplify things
It doesn't matter what computer you use. The wheel counter computers are (basically) all equally accurate.
If the computer is cheap, add one to each bike.
The computers are good enough. The GPS is good enough. It's not rocket surgery.