Yea, but what I mean is if they intend you to use different fronts then they expect you'll be using different rears too (say a complete set from a b44) so if they'd be a different offset the car wouldn't work the same, and there would be no point making the car accept them as whats the point of using different fronts but still having to use Schumacher rears. So Scumacher will have just coppied the offset the other companies use.
If you know what I mean
I know someone with JC, AE and Schumacher wheels so I'll measure the offset and see if my theory holds