In alt.autos.toyota Ad absurdum per aspera > wrote:
> To the good advice given elsewhere in the thread, I would add, "check
> your speedometer" (and thus your odometer). These things have some
> intrinsic error, which might either stack up atop or the other
> potential source of error: hanges you have made by tire/wheel size.

While not an issue with my Toyota, I've had several vehicles where the
odometer error is significantly less than the speedometer error.