Identifying the wheel size:
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Markings on the inner side of the wheels identify 18-inch Turbo wheels with the sizes 9J x 18 RO 52 and 10J x 18 RO 65.
The sizes together with the rim offset (RO) and spare part number are marked with A or B.
The correct version for the model is marked with an X which is struck into the "A" or "B" boxes provided.
Figure shows model "B".