FRENES

Wheels from Opel Vectra B 4 trou on Opel Adam Rocks: compatible?

Yes, the hub is identical

Same 4x100 PCD and same 56.6 mm centre bore: wheels from Opel Vectra B 4 trou bolt on and centre on Opel Adam Rocks without rings. You still need to check the offset and tyres, detailed below.

Opel Vectra B 4 trou1995–1998Opel Adam Rocksfrom 2014
PCD4x1004x100
Centre bore56.6 mm56.6 mm
ThreadM12x1.50M12x1.50
Original wheels ≈6Jx15 ET49 6Jx15 ET39

≈: width estimated from the original tyre size.

Wheel by wheel: offset and tyres

Each original wheel from Opel Vectra B 4 trou is compared with the one from Opel Adam Rocks 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 · 195/65R15 — Check on the car

    Compared with the original 6Jx15 ET39 on Opel Adam Rocks: shock absorber side +10 mm, wheel arch side −10 mm, tyre diameter +5.2 % : fit it with the original tyre size of Opel Adam Rocks (185/60R15), not that of Opel Vectra B 4 trou. 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 Opel Adam Rocks (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 Rocks on Opel Vectra B 4 trou?