ET, from the German Einpress Tiefe (offset in English), is the space expressed in millimeters between the exact center of the wheel and the point of attachment of the rim to the hub. For the same car, with the same wheel width, a smaller ET will make the wheel protrude more towards the outside. All search results for your car shown by CambioRuote do not protrude from the wheel arch.
The Type of the car is a code that the producer assigns to each vehicle in order to distinguish it from similar models.
You can find this code in the italian registration certificate in two places: At point D.2, Vehicle type, or at point E, vehicle identification number.
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