FRENES

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

Yes, with hub centric rings

Same 5x110 PCD, but the centre bore of the wheels from Saab 900 (71.5 mm) is larger than the hub of Saturn Astra 5 trou (65.1 mm): you need 4 hub centric rings 71.5 → 65.1.

Rings 71.5 → 65.1

Saab 9001978–1988Saturn Astra 5 trou2007–2010
PCD4x114.3 / 4x108 / 5x1105x110
Centre bore71.5 mm65.1 mm
ThreadEcrous - 1/2 - 20 UNM12x1.50
Original wheels R
R
≈6Jx15 ET49		 ≈6Jx15 ET35

≈: width estimated from the original tyre size.

Wheel by wheel: offset and tyres

Each original wheel from Saab 900 is compared with the one from Saturn Astra 5 trou 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.

  • ≈6Jx15 ET49 · 185/65R15 — Check on the car

    Compared with the original ≈6Jx15 ET35 on Saturn Astra 5 trou: shock absorber side +14 mm, wheel arch side −14 mm, tyre diameter −2 % : fit it with the original tyre size of Saturn Astra 5 trou (195/65R15), not that of Saab 900. 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 Saturn Astra 5 trou (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 Saturn Astra 5 trou on Saab 900?