so much stupidity in this thread its hurting my head
OP is talking about two different things and apparently no one's corrected him. He should read this STICKIED THREAD
All about wheel studs and nuts
Also follow along:
1) Extended Studs
Exactly like the name. They are replacement studs that you mount your wheels on. They are needed when people don't know what they're doing and buy crappy sized wheels, and subsequently need to run a spacer to "correct" the offset and push the wheels out.
The problem occurs when you run more than say, a 10mm spacer, because now you no longer have studs long enough to stick out the holes in your wheels that the lug nuts go on, for those nuts to be threaded properly.
extended studs do . .. that. They extend out further, so you can tighten the lugs properly. This is a safety thing.
2) After market lug nuts
I have no idea what you're talking about when you say they aren't nice options. Rays, Work, Muteki, Project Kics all various types of lug nuts in the correct pitch (12x1.25) I'm using the Project Kics R40 Iconics. Two pieces floating design, multiple finishes/color options, ultralightweight.
The reason aftermarket lugs are needed for aftermarket nuts is that most aftermarket wheels have mounting holes with a different shape than the OEM wheels, and therefore need aftermarket lugs with the same conical shape
Look for yourself
OEM:
Aftermarket (Project Kics)
Aftermarket shape typically gives gives you a variety of colors/finishes, as well as a "lock" thats different from OEM
You can avoid all of the spacer/extended studs bullsh!t by getting wheels that actually fit, imagine that!
Here's the avant garde wheels you're looking at:
M368 - Avant Garde Wheels
It appears they only come in 19x8.5 and 19x9.5, offsets not listed (i'm assuming their bullcrap). Those widths are horrible - worse than OEM nismo (9.5/10.5) They're gonna look like garbage
Heres a similar design wheel, enkei GTC01:
GTC01 | Enkei Wheels
Well established manufacturer, plenty of availability, good rep in track community
Slightly better sizing
You should also look at these wheel lineups
Work Emotion
SSR GTX/GTV
Rays Gram Lights
WedsSport
Advan
that will have . . . tons of designs with superior options