225/45/17 is the size you would need if you were rollin on an I4 like myself... by calculations you would be 2% too fast... with 215/45/17 you'll be going 3.4% too fast... but given the measurements you provided your best bet would be 235/45/17 would put you at .6% too fast, but closest you're gonna get. When your speedometer reads 60pmh you will actually be going 59.6mph... not too much of a difference...