Rim Help...

[HK1837]

I have seen people machine the inside of the alloy (ie US racer Indy type) rim where the hub sits to get a better result. I personally wouldn't recommend this practice as it could significantly weaken the wheel to failure.

Mauser

I think they used to make them really thick in that area and machine them to suit different offsets before drilling the stud pattern. I've had them before where the hub of the wheel was about 3" thick and you needed special wheel nuts to reach the studs. Must have generated some extra force on the studs and wheel nuts.