Modified rear hubs ...need balancing ?? Options

[kuch]

I modified my stock rear 4-bolt hubs by drilling and taping them to the 5-bolt pattern. To get more threads in the new holes I milled the back of the flange flat and welded on nuts to the back side of the hubs. I can now switch from the cheep VW wheels or the more expensive alloys when ever I want.

The question I have is do you need to balance the hubs or would this be over kill?

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[Mueller]

I have mixed feelings on this.....if done properly, I see no real issue with the tapping of the hubs if the material thickness is not comprimised and one has at least 75% thread engagment (normal Class B fitment)
I'd use a tap drill smaller than recommended to get a tighter fit myself.

The addition of the nuts on the farside of the hub is a good idea and would be better if using high strength nuts and not "regular" nuts as found at Orchard Aircraft Supply (IMG:style_emoticons/default/smile.gif)

Now the real question is, do the bolts fit the new wheel choices correctly? I have a rim for a Honda (aftermarket Kosei Racing rim) that I thought I could drill and tap the hubs for and use the factory bolts...but I cannot, the mounting surface between the bolt and the wheels are different....ball socket verses angle socket...

So, I either use studs and the correct lug nuts or find lub bolts with the correct mating surface (which I doubt are available, but I might be wrong)