Wheel Size Question

[2007VMAX]

How would a wheel size ( 20" 8.5 with a 40mm offset) look compared to the stock 17" 8.5 wheel on my truck?

[2007VMAX]

Would they sit in farther than the stock wheels or out?

[Darkanion]

If I entered the #'s correctly and if I'm reading the screen right, it looks like they would be farther in.

 

Here's the link I was looking at.

[2007VMAX]

I did some measuring last night comparing the 20" wheels on my 07 Tahoe and the 17" wheels on the Vmax. What I found is that the 20's stick out farther than the 17's?! Installing 20" rims with a 40mm offset will actually stick out 1/8+" more than the stock 17's. I did a dry fit of the new rims this morning ( I recieved them last night right after I posted my question go figure ) and confirmed this. So I am guessing that GM made the 20" wheels 31mm and the 17" aprox. 41mm???? I am going with BF A/T KO's 285/55-20 looks they are going to sit perfectly under the truck, I learn something new every day