IMO 20 inch rims would look sh*t, but that's just what I think, and they will lower the performance of the car (which may or may not be important to you). It's just personal preference. If the car isn't lowered then they should fit ok without scrubbing depending on the width and offset of the wheel. If you do lower the car, it will depend on how low you go as to whether you need guard work or not and whether you upgrade to adjustable camber arms or not.

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