I think the offset of an 18x8 wheels is 50mm, which means that there is a -50mm offset on that wheel. That means that the mounting surface is 50mm away from the centerline of the wheel (toward the face). I'm not that good with this stuff either, especially with a wheel I don't know, so someone else will be along to give a better explination.
Axle's don't enter into this at all. The new 5x130 pattern drum fits as a stock drum would. No guesswork or modifications needed. Bolt on and go. I have them, so I know what im talking about
