Thanks for your advice. I jacked up the car and took off both front wheels. I prefer not to swap sides as the tires are directional, so I elected to go the route of very careful measurements.
To get the measurements I laid a straight edge across the back of the tires and measured to the flats that mount against the hubs. I did this many times per wheel and can discern no difference between the wheel tire combinations.
Here is a picture of the problem side:
