Backspacing Questions for new wheels?
 

Am I correct that stock H3(T) wheels are 16x7.5 with 5.75" BS? That seems like a lot of BS, but I do see that they are relatively flat faced. I was considering a set of aftermarket wheels that were 16x9, 4.50" BS, but that would move my wheel out 1.25" for the diff in BS, and 1.5" for the wheel width increase??

Bueller?
 

I guess I'm going with 5.75 BS and 38mm offset unless someone corrects me. Given that, I'll share my math:

To keep the factory BS when buying aftermarket wheels, your positive offset should be:

7.5" = 38mm
8" = 32mm
8.5" = 25mm
9" = 19mm
10" = 6mm