Uneven brake pad wear
 

I just looked at the brake pads from outside the wheel. While the front right pad has less than 1mm left on it, the right one has about 3mm. What's with the difference? :dunno:

Does anyone know which side the front brake pad sensor is on? I am wondering why the Check Control message hasn't come up yet.

Front wear sensor is on the left (driver's) side, and the rear is on the right (passenger's) side for U.S. spec vehicles.

Are there any specific reasons one side would wear significantly more than the other?

See http://www.mightyautoparts.com/pdf/articles/gb0898.pdf for some possibilities

A sticking caliper, caliper slide bolts or brake pad to caliper contact points not lubricated. Although your readings are not out of the ordinary.

At what difference, would you consider there to be something wrong. I just looked, didn't actually measure. The difference seems pretty significant.

I would be a little concerned if it were a difference of 4mm or above.

I wouldnt worry about it unless the car drags to one side because of it. Just replace the pads.