offset question

[blackdeathtrap]

i wanna run 215 45 17 in the front and 295 45 18 in the back cars lowerd 2 inchs what kind of offset will i need or am i just dreaming on getting these to fit or can i even go widder the rims are 18 by 9.5 45mmoffset in rear would be 17by 8 in the front are the back rims gonna be wide enaugh and are the fronts too wide

 

[blackdeathtrap]

its either gonna be nitta nt05 or g forces drag radial in the back or a g forces kdw nt

 

[blackdeathtrap]

so after test fitting the 18s in the back and 17s in the front i think they make my car look homo
so im gonne stick with my gn wheels heres another question is i go to a 315 50 15 with a gn rebuilt 10 inch rim will it fit or should i just stick with a 295 50 15

 

[Zohan]

i run 295/50/15 on 15x8 rim 4in backspace stock suspension littel rub no problemo 4 me