Backspacing Actual Width vs Stated Width

[ADiCarlo]

Hi Guys,

When backspacing is measured it's take from the actual width of the wheel not the stated correct?

So a 10 inch wheels center line would be 5.5 instead of 5 to account for the added 1 inch difference between stated and actual.

I'm trying to work with some European wheels that use offset so to calculate the backspacing i'm taking the stated size + 1 inch (for actual) /2 + the mm offset converted into inches.

Also whats the maximum recommended spacer to run on the front wheels?