Anyone have any experience with wheel spacers? Looking to add a set of aftermarket rims to the Maserati... Not a lot of all season tire options for the 20 inch wheels... I can get the continental DWS tires I like a lot in 19s but I will need to run spacer... Factory rears are 19x10 most quality wheels are 19X9.5 with an offset that puts the wheel an additional 5mm inside the wheel well... I have never used spacers, do they impact performance in any way?