FRENES

Wheels from Fiat Croma on Opel Adam S: compatible?

Yes, the hub is identical

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

Fiat Croma1985–1996Opel Adam Sfrom 2015
PCD4x98 / 5x1105x110
Centre bore65.1 mm65.1 mm
ThreadM12x1.25M12x1.50
Original wheels ≈5.5Jx14 ET39
≈6.5Jx16 ET41
≈6.5Jx16 ET40		 ≈6Jx16 ET55

≈: width estimated from the original tyre size.

Wheel by wheel: offset and tyres

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

  • ≈6.5Jx16 ET41 · 205/55R16 — Check on the car

    Compared with the original ≈6Jx16 ET55 on Opel Adam S: shock absorber side −7.6 mm, wheel arch side +20.4 mm, tyre diameter +1.8 %. Comparison for guidance only (estimated width). Check in detail

  • ≈6.5Jx16 ET40 · 205/55R16 — Check on the car

    Compared with the original ≈6Jx16 ET55 on Opel Adam S: shock absorber side −8.6 mm, wheel arch side +21.4 mm, tyre diameter +1.8 %. Comparison for guidance only (estimated width). Check in detail

  • ≈5.5Jx14 ET39 · 175/70R14

    Opel Adam S has no 14-inch original wheel in our data: check the approved fitments and caliper clearance.

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 Opel Adam S (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 Opel Adam S on Fiat Croma?