Nice graphics, but utterly useless

Sadly, the only thing meriting a star is the high-tech graphics. Though I didnt expect the Power Meter to be dead-on accurate, it would at least be nice if error could be reduced to plus or minus 5-10%. In my case, and even considering my iPhone was properly mounted and calibrated, the app was about 15 mph off at 30 mph! Also, if you register a profile with BMW they are supposed to supply you with an access code (key) that will allow you to change the skin graphics... well, despite my registering and re-registering at least three times, the access code provided continued to come up with a message indicating my code was invalid. Im a huge BMW enthusiast, but this will dissappoint and frustrate users more than the companys infamous i-drive!

mikjensha about BMW M Power Meter