Can Someone Tell Me If These Wheel Calculations Are Right?

[00328]

I've been looking at after market wheels, but I need to know how much farther they will stick out over the stock wheels.

Here are several wheels and I need to know if I've got the calcs correct.

17x8, offset 0, backspace 5.0 in
stickout 37mm

17x8, offset 12, backspace 5.5 in
stickout 25mm

17x8, offset 0, backspace 4.5 in
stickout 37mm

BTW - my stock wheels are 17x7.5 and offset is 30mm

Also the wheels with a backspace of 5.0 and 4.5 will push the wheel farther away from the uca's correct?

Thanks for the help.

 

[rook]

37mm seems right for the 5.0" bs wheel. The 4.5" bs wheel's figure should be 50mm.

For uca clearance, the lower the bs the more clearance you have on the inside.

 

[00328]

50mm for the wheels w/4.5 BS huh?
Thats means they would stick out about 1 3/4 in more than stock.
I think thats more than I want to go, damn.
Thanks for the reply.