FRENES

Wheels from Saturn Astra 5 trou on Saab 900: compatible?

No, the centre bore is too small

Same 5x110 PCD, but the centre bore of the wheels from Saturn Astra 5 trou (65.1 mm) is smaller than the hub of Saab 900 (71.5 mm): they will not fit without being re-bored by a professional.

Saturn Astra 5 trou2007–2010Saab 9001978–1988
PCD5x1104x114.3 / 4x108 / 5x110
Centre bore65.1 mm71.5 mm
ThreadM12x1.50Ecrous - 1/2 - 20 UN
Original wheels ≈6Jx15 ET35 R
R
≈6Jx15 ET49

≈: width estimated from the original tyre size.

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 Saab 900 (Ecrous - 1/2 - 20 UN), 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 Saab 900 on Saturn Astra 5 trou?