[TW]Fox;16777947 said:Are these even accurate? I did one on my car and got 6.4 seconds. I'm not going to start quoting that as my cars 0-60 time though as how can it be as accurate as proper timing gear?
They are accurate if it's used correctly - i.e. on a level road, positioned correctly, etc. IIRC the expensive timing gear used by the car magazines works in the same way too, i.e. an accelerometer. The conditions in which the manufacturers measure it vary, too.