If you check, there are pics of an IS-F with 20" x 11.0 rims. I believe you'll see the pics under the title "My IS-F with some goodies".Me personally I wouldn't go with a taller tire maybe a 19" that'll be wider but not taller, 19" is a good size but with a 285/30/19 would be nice. Also you dont want to add any more weight because the factory rims are LIGHT you would need to get something just as light if not lighter.... jmo