How accurate are the lap times?
Accuracy of the lap times is fully dependent on quality of your GPS signal. If GPS signal is weak, RaceChrono can be inaccurate and will probably even miss your traps (will not record a lap time). GPS signal quality is affected by your GPS receiver quality and its placement. Recommended place in a car is as close to your windshield as possible. On some cars and some receivers, you will not get proper GPS signal when installed inside the car. As well as GPS signal quality, the placement of the finish and start lines affects the timing accuracy. Trap lines should not be set to tight corners, or to places where you usually do braking. Lap timing with a normal 1 Hz GPS and RaceChrono achieves +-0.25 seconds accuracy or better, and with 5 Hz GPS the accuracy will be better than +-0.15 seconds.
