I have 20's, but let me tell you...they are not big enough
If I get to do it over again, I'd go with 22's no doubt.

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2010 BMW X5 35d Diesel (Current)
Prem/Tech/RB/RC/3rd row/ Black 20"s
2002 Porsche Carrera 4 cabriolet (Current)
H&R, 19" VIP Modular VR05
2007 530i Black Sapphire (Returned)
Steptronic/ Sport Pkg/ Premium Pkg/ NAV/ M Tech/ Black 20's