sad to inform u bro, even if u used stock tires and rim, the analog reading also not that accurate...the ecu reading and what is shown on the speedometer tak tally, at least for my ride. Not sure about the others.
I am curious "the ecu reading and what is shown on the speedometer tak tally" ....how do you know ah? Sorry if I am asking s***** ques haha
i got a gadget which is connected to the OBD2 sensor. it shows reading from the ecu. difference is about 2km/h
another way is to try going by sle towards bke and exit at yishun, at the filter, there is a speedometer that tells you the speed you are travelling at, i ever tried and it tally with my speedometer reading, not sure how accurate though.
i also tried that at bedok north exit from pie the reading tallies with my Greddy Informeter reading. alan, my analog speedo is +2km from the ecu reading.
