Takes a little while for plug to color, this would be good to start a base line, but if racing, need quick results, and if reading to do any good, need to be shut down under full throttle and no idling back to pits. Looking for color, blisters, erosion of electrode & grd., etc.. Once get dialed in read for your own satisfaction. If your seriously racing, imagine you would look at plugs weekly anyway. The way our bikes are set up (tank, coils, etc.) wouldn't have time to make second round.
