If I had to guess, stock hubcaps. I wanted to run 13s for the hubcaps but It just wasn't gonna happen, theres basically no 13" tires in production. To the OP, if hubcaps are your concern, you can measure and cut the top off a dog-dish cap and carefully mate it to your hubcap so it sits in the center. On 14" wheels this'll leave a half inch gap you can spray chrome, silver or black to make inconspicuous.
