anyway to calculate wheel et after switching barrels

[330i ZHP]

I have two 19x8.5 et 32 BBS LMs and 2 19x9.5 et32 LMs

The 9.5s wont clear a bbk, but the 8.5s will...so my thought is to swap the face from the 8.5 to the barrel of the 9.5

Anyone know how to calculate the end results?

Thank you in advance.

Stuart

[FreshLikeSushi]

measure......

[.Mad Hatter.]

measure......

this.

[330i ZHP]

Not being sarcastic but, i knew that to a point

i will figure it out i guess - i thought maybe there was a convenient calculator

[330i ZHP]

thank you

[Zic]

sounds like the 8.5 face has bigger distance from the hub out to the spokes.
Based on that i would guess that the 8.5 face will work with the 9.5 lip-barrel since LM's are 2piece.
But you will get lower offset on the 9.5 and higher offset on the 8.5
this is based on the fact that i THINK, what you mean is the caliper hits the spokes. and not something else, like the barrels on the two wheels are not alike, lets say the barrel of the 9.5 is too small, and cant fit over the breaks. You should say what the problem is.