Yeah, studs are a bit short. The A4 wheels also had 14mm holes for the studs so there was no diameter problems there. The ball taper on the bus lug nuts is different than the audi wheels are machined for so the nut contact area is not soo good....... not too sure what I'm gonna do about that.
I measured the bus hub with my calipers and just took the number to greens.... 66.0mm was the magic number, fit like a glove.
And as far as the tires go....... what a delema. What I didn't realize was that load rated tired for the 15\" are much more $$ than the correct load rated tires for 14'' stockers. I am feeling a little mislead by the info given from one website that sells 15\" wheel and tire packages. I ultimately went on the advice of my wallet and got car tires similar to the ones sold with the \"package\" on that website. They are 95 load (1510lbs) which is just under the \"correct\" tires I have on the 14\" which are C load (1548lbs ish)
whatever, it's done now.......