Wheel spacer install questions/concerns

Searched but didn't find any answers.

I'm installing some Hub Centric 1.5 spacers by AA ignition I got from Amazon. Seems to be similar to the Spidertrax or Bora. I have Texas TSS rims.

First concern, when mounting to hub, it scares me how much thread is used and/or not used.
My studs appear to be 1 inch or so with 7/8 sticking out with rotor in place.
Is this stock tacoma stud size?
The mounting lugs are 3/4 inch thick
When installed, I'm able to make 6 thread turns, but there is still approx., 1/4 of thread remaining. That means approx. 1/2 inch is in contact. But this looks scary to me and the pictures I see of other installs show more thread contact. (see attach screen shot)
I didn't see where anyone had to install longer studs.
Ideas, Suggestions?

Second problem is the studs on the spacer stick out 1 1/4 inch.
My stock bullet lugs appear to bottom out before wheel is secure to rotor.
My stock lugs only have about 1/2 inch threaded on the inside.
Have you guys had to buy longer lugs?
Which ones?
Or do I have to get shorter studs?
I really didn't want the extra works of replacing all these studs?

Thanks
Timo

 

Wow, 4 spacers for under $80. I cant visualize what you are asking. But, when I saw the name AA Ignition, my blood began to boil. I bought three of their ignition coils for our Lexus and all failed less than three years - two failed before the warranty period expired and they ignored my warranty claims. I would avoid them in the future.

 

Some guys purchase extra long wheel studs to accomodate the spacers .
Are you prepairing to eat wheel bearings ?

 

According to the manufacturer of the studs and lugs that is acceptable. I know I couldn't believe it.
I purchased these and was much happier. Seems they are on sale now to.

I later replaced all with a properly spaced wheel setup.