How the hell could you have 54.1mm center bore wheels on your car? The wheel wouldn't sit flat against the hub face, it'd wobble so bad it'd be undrivable. Unless someone either enlarged the center hole on the wheels, then they obviously wouldn't be 54mm anymore..
It's fine if the wheel hole is larger than the hub on the car. Like Mark mentioned, you just center the wheel by using the wheel nuts. It's not ideal but it'd work fine in this application.
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View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)