[Angelqute1]

I need to find out the specifics on the following:

Tires on the Sky
Bolt Pattern
Back Spacing
Width

Anyone? Bueller? Bueller? Anyone?

 

[kingarthur]

I would say that the backspacing and bolt pattern must match the Solstice.
I assume the wheels will also have the same dimensions (size and width). The tires may be different, for a different (perhaps more comfortable?) ride.
Check with Pontiac to find out the Solstice's bolt pattern and backspacing.

 

[Delnari]

Visit solisticeforum.com for all these specs. The only difference slated so far for the Sky over the Solstice may come in the form of softer valve damping in the shocks.

 

[brentil]

I think all of these items have been covered here before too, and are possibly in the FAQ.

245/45 18"x8"
55mm Offset
5x110 bolt pattern

You're going to have a VERY hard time matching those rims with anyhitng out right now due to the 55mm offset.