Weebie, that is exactly what I am running. I have a 4.8is with Pirelli Scorpions 275 40r20 on all of my wheels. Works great. Some people prefer to add spacers on but I don't think it is that noticeble. Those tires will fit I believe up to an 11" rim.

Have had no problems on this setup in very deep snow on 20's

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Redpoint

2016 xDrive50i

2006 Sapphire Black X5 4.8is
Body color matched Kidneys and hood vents

2005 Alpine White 330cic
Performance Package
Premium Package
Cold Weather Package
Foose 19" Rims

1987 Ducati 750 Paso