FRENES

Wheels from Fiat 500 (312) on Alfa Romeo 155: compatible?

Yes, the hub is identical

Same 4x98 PCD and same 58.1 mm centre bore: wheels from Fiat 500 (312) bolt on and centre on Alfa Romeo 155 without rings. You still need to check the offset and tyres, detailed below.

Fiat 500 (312)from 2007Alfa Romeo 1551992–1997
PCD4x984x98
Centre bore58.1 mm58.1 mm
ThreadM12x1.25M12x1.25
Original wheels 5.5Jx14 ET35
5.5Jx14 ET35
6Jx15 ET35
6.5Jx16 ET35		 ≈6Jx15 ET40

≈: width estimated from the original tyre size.

Wheel by wheel: offset and tyres

Each original wheel from Fiat 500 (312) is compared with the one from Alfa Romeo 155 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 ET35 · 185/55R15 — Fits like the original

    Compared with the original ≈6Jx15 ET40 on Alfa Romeo 155: shock absorber side −5 mm, wheel arch side +5 mm, tyre diameter −1.8 %. Comparison for guidance only (estimated width). Check in detail

  • 5.5Jx14 ET35 · 165/65R14

    Alfa Romeo 155 has no 14-inch original wheel in our data: check the approved fitments and caliper clearance.

  • 5.5Jx14 ET35 · 175/65R14

    Alfa Romeo 155 has no 14-inch original wheel in our data: check the approved fitments and caliper clearance.

  • 6.5Jx16 ET35 · 195/45R16

    Alfa Romeo 155 has no 16-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 Alfa Romeo 155 (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 Alfa Romeo 155 on Fiat 500 (312)?