Thanks for the info. Who's Andris. Is that a screen name for a member?
Any others on if 1.5" adapters could work on a 17x9?

 

Andris Skulte, he owns Skulte... Tell him what your application and what rim you are using and he can tell you what your options are. In my previous post I posted a few pics on how my car looks with the rims and spacers, check em out. Also Check out Mark Lock, his screenname is LOCK over on thirdgen.org, he is running polished SS/ZR1's on his Iroc. He is running 2" spacers and 4th gen rear also!!

 

I have 98 Camaro SS wheels on my car, using 2" adapters from Skulte Performance. I run 275/40r17 all the way around with no rubbing problems. The adapters are pretty much bullet proof, and should handle just about anything you could throw at them. You will have to run 2" up front. Anything less and you will have major interference with the tie rod ends. 1.5" will work in back though.

I started out with the 2" all around. Not too long ago I swapped in a 2002 TA rear, and am running the wheels without spacers in the rear.

Here are a few old pics just after the new wheels were installed:

Pic 1
Pic 2
Pic 3

Please excuse the picture quality. Car looks 10 times better in person

Andris is a member of Thirdgen.org, and may be here, but I've never seen him post here. I used to follow his twin turbo buildup years ago before Thirdgen's UBB. Haven't seen him post much since.

 

So, if I run 1.5" in the back, then will the appearance be drastically different than in the front. Will the wheels be sucked under the fender, in comparison to the front? The reason is, I have the ability to get a pair of 1.5 inch bolt on adapters, at much less of a cost than the 2". They are good quality, just from a different maker. but if mixing the sizes from front to rear is going to look odd,then I won't even consider it.

 

It will look fine. The 4th gen rear is only 3" wider than the 3rd gen rear - I've measured. I guess I could say that till I run out of breath but a lot of people around here just don't get it. So running a 4th gen rear gives you the same rear track width as running a 3rd gen rear with 1.5" spacers in back. 1.5" spacer on each side = 3" wider overall = 4th gen rear width.

You won't notice the .5" in the rear.

Now I'm curious as to where these inexpensive adapters are coming from...

 

Ok, I went to Skulte's sight and did their equation for fitting adapter to your backspacing and got some interesting numbers. What do ya'll think...(This is based on a 9" rim with 56mm offset and a .25" rim lip, and a front max backspacing on our car of 5" and rear of 5.85"...

Equation is Backspacing=centerline (rim width of 9"/2=4.5) + offset(56mm/25.4=2.20 inches) +rim lip (.25 inches)

Centerline of 4.5 + 2.20+.25=6.95" backspacing on a ZR1 rim

Therefore, if the max backspacing for the front of a 3rd gen is 5 then that leaves an adapter of 1.95 inches, and if the max backspacing for the rear is 5.85, then that leaves an adapter of 1.10 inches.

 

Thats funny because when i measured my 99 Z rear it was just shy of 4" wider at around 3 7/8. Not saying you are wrong but I would suggest remeasuring. 1.5" in the rear will set your rear wheels in, not that big of a deal in theory but it will look funny! I have a 99 Z rear with longer studs and a 3/8 spacer in the back to even the wheels up a little more. I have them lined up as good as possible but they still are set in a little bit and inside the front wheels.

All I can say is try them, but more than likely they will rub on the wheel well. Call Andris and pick his brain, you don't have to commit to anything and just see what he says!

 

Thanks for all your help guys. My main goal was to get educated so I can make a decision, and not just go buy something.
Ya'll have been a great help!

 

You should go to Vette Brake Products.. Let me get the addy.. Go to www.VBandP.com. They have pretty resonably priced adapters, 1.5" Adapters are $149.95 for a pair.. There not much more cheaper than skultes but there is another place to watch.. Another way you could get around all of this is to just buy rims that have the correct backspacing to fit. I'm probably buying TTII's and Im just going to get special Backspacing..

 

Thanks for the info on the sight. On the backspacing, as I posted, I already have these rims laying around, so they are the ones I've gotta go with.