FRENES

Wheels from Opel Adam S on Fiat Croma: compatible?

Yes, the hub is identical

Same 5x110 PCD and same 65.1 mm centre bore: wheels from Opel Adam S bolt on and centre on Fiat Croma without rings. You still need to check the offset and tyres, detailed below.

Opel Adam Sfrom 2015Fiat Croma1985–1996
PCD5x1104x98 / 5x110
Centre bore65.1 mm65.1 mm
ThreadM12x1.50M12x1.25
Original wheels ≈6Jx16 ET55 ≈5.5Jx14 ET39
≈6.5Jx16 ET41
≈6.5Jx16 ET40

≈: width estimated from the original tyre size.

Wheel by wheel: offset and tyres

Each original wheel from Opel Adam S is compared with the one from Fiat Croma 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.

  • ≈6Jx16 ET55 · 195/55R16 — Check on the car

    Compared with the original ≈6.5Jx16 ET41 on Fiat Croma: shock absorber side +7.6 mm, wheel arch side −20.4 mm, tyre diameter −1.7 %. 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 Fiat Croma (M12x1.25), 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 Fiat Croma on Opel Adam S?