I've never had any interference...been using the Micro for more than a year now.

BUT, on a recent ride of around 70 miles, I compared the stats with a riding partner (who has POLAR set up) and our 'total miles' for the ride were different by more than a few miles. There is no way that I could have rode an extra 3 miles compared to her.

Something's strange.

As far as I'm aware, so long as you have the correct 'wheel size' setting, the computer will automatically adjust for where you place the sensor along the wheel's radius.

Any thoughts on this?