I have a 92 325i 4 door and have some 19 inch Konig Tantrums on it.  Tire size is 235/35/19, what is the lowest I can go with springs and be on the verge of tucking without scrubbing? I have been told that a 2 inch drop will scrub, the front looks as if it could go 2 at least?  Thanks for any help!