Need a little help with tire/rim sizes.

[Rerun]

Thinking about getting some rims, the tires I have are still in pretty good shape so I'd like to get some rims that fit the tires I already have.

Fronts are 235 45R/17 and the backs are 255 45R/17. Obviously, 17 inch rims, but what about the depth?

Thanks for the help.

 

[Rerun]

BUMP

 

[TheUser]

I would say 8" for fronts and 9" for rears. I read on here a while ago that for tire sizes, you go 1 inch larger than the rim. 1 inch = 25 mm, so 8*25=200+25=225, so that's how I got the front. I'm not so sure how accurate this is since the stock wheels don't go by that. I also have a friend w/ a 94 Vette and they have 285's on 9" rims stock, so who knows.