Just to add,

I admit that got the 20"s for the pimpin look but the second reason that really made me shell-out the dough (and willingly buy the winter tires package to have them) was that the 20" configuration actually give more footprint (wider contact patch between the car and the road). The wider rear tires not only look good but increases the foothold significant compared to the 19" or the 18" setup, making it safer by giving more grip. and that really sold me on the 20"s.

I wish you all the best.

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2007 4.8i Space Grey, 20", black nevada interior
All options with no 3rd row, rear entertainment,
handling pkg.