I know there is a thread for this, but I need a answer by tomorrow.thanks in advance guys

2004 g35 sedan
Lowered on spring I think a inch,nothing major
Front fender are spaced out by about a inch with a spacer on the mount, sso lots of space
Rears are roller and pulled a little
18x9.5 +34
I know guys are running a square 275/35/18 setups
But can I ran a 285/35/18?
I would even run 295/30/18 if I could,but think that's a wrong size for me
Don't mind doing work to make it fit. Thanks in advance