the 4.8is (E53hp) is sitting lower on the air suspension as it rides on the 20" rims... a 4.4i (E53a - "a" for automatic) is sitting a bit higher on 19" rims, even if it has a sports suspension. It might be on air suspension or coils, but, unless it had factory option of 20" rims, it sits higher...

these values are in mm, measured from the bottom of the rim to the top of the fender - this statement is from memory, so check on the measuring info...

_______________ 17"____18"____19"____20"___these are wheel sizes
front axle_______685____697____710____722
rear axle________687____699____712____724
sport fr_________670____682____695____707
sport rr_________672____684____697____709