Yes, the hub is identical
Same 5x110 PCD and same 65.1 mm centre bore: wheels from Saturn Aura bolt on and centre on Pontiac Solstice without rings. You still need to check the offset and tyres, detailed below.
≈: width estimated from the original tyre size.
Wheel by wheel: offset and tyres
Each original wheel from Saturn Aura is compared with the one from Pontiac Solstice of the same diameter: how much closer the wheel gets to the shock absorber or how far it sticks out of the wheel arch, and whether the tyre keeps the same overall diameter.
- ✓
≈7Jx18 ET35 · 225/50R18 — Fits like the original
Compared with the original ≈7.5Jx18 ET45 on Pontiac Solstice: shock absorber side −16.4 mm, wheel arch side +3.6 mm, tyre diameter +0.7 %.
Comparison for guidance only (estimated width). Check in detail
Before fitting the wheels
An identical hub is not enough: offset, width and diameter change the position of the wheel, and larger calipers can touch a smaller wheel. Original wheels often use bolts or nuts with a specific seat: keep the fixings intended for the wheel, with the thread of Pontiac Solstice (M12x1.50), tightened to the torque shown on its vehicle page. Finally, check that the size is among the approved fitments for your vehicle. This comparison is for guidance only: have the fitting approved by a professional.
And the other way round: wheels from Pontiac Solstice on Saturn Aura?