I’ve owned a few kickrs over the years as well as a few different power meters.
I’ve tested the power meters against others (pedals vs wheels vs cranks on the bike at the same time) and I’ve never had a significant difference between them - either inside or out
However, whenever I record the power numbers I get out of any of the three kickrs I’ve owned I consistently record higher power from the kickrs than I do from the power meters. My current setup I can record 350 watts from the pedals and the kickr tells me around 370 watts.
I link up a different garmin to the kickr and the power meter and record a solid five minute effort holding a set wattage to get the average and thus figure out the difference (note that the difference grows at higher power numbers )
I love my kickr, but it should be reading lower than the pedals (loss from the drive train), not higher. Has anyone else had a similar experience and done the testing necessary to confirm? Curious if it is unique to me and my various setups or if it is across the board with smart trainers