On Thu, 20 Jul 2017 08:29:53 -0600,
rbowman wrote:

Using the car odometer and a notebook with your gas purchases is
strictly for the Luddites. It's like measuring acceleration with a stop
watch and the seat of your pants when you can use an accelerometer.

Thanks for checking out the articles because they were ancillary to our
conversation on tire-diameter effects on performance, but it's an
interesting question so there's now a new thread opened to iron it out.

What is the realistic accuracy & precision of typical consumer MPG
calculations (tripmeter miles/pump gallons)
https://groups.google.com/forum/#!to...ir/PT3YdPClM7g

My contention is, at the start anyway, that it's going to be really bad for
the people who love decimal places - but - let's see how it turns out
scientifically because I don't want to make unfounded claims without
stating their foundation realistically.