Be very careful with those 20's. I put a set of 19inch MOMO's on my IS 350 with P-Zero tires and I must have bent my rims 5 times just from normal driving. I don't think I'm going to change the wheels on my new IS-F, especially going more low profile as you would with 20 inch rims. I just think the suspension is too stiff and you might have the same trouble.
That said, I'm sure they'll look sick...
Post pictures.
That said, I'm sure they'll look sick...
Post pictures.