How low can i go?

[skylovia]

I want to put 315/35/17s(on a 17x10.5) out back and either 275s or 255s(on 17x9) out in front and I want to go as low as possible without rubbing. How low can i go?

 

[95riosnake]

I can't answer your whole question, but I will say that if you wanna go really low, I would say to get 255's in the front, less chance of rubbing in the front that way.