I want to get some 19's for my Z. And I know that everyone that I've seen with 19's use 35's. My question is, can I get away with using 245F/275R/40/19 (stock suspension)? The roads in Ohio can be pretty brutal at times, and 40's would afford me a little more wheel protection....but of course, if they won't fit, I don't have much choice. I would settle for 18's and 40's, but I'd rather have 19's if I can. Thanx in advance.