FRENES

Wheels from Mercedes A-Classe W177 on Mercedes S-Classe W140: compatible?

Yes, the hub is identical

Same 5x112 PCD and same 66.6 mm centre bore: wheels from Mercedes A-Classe W177 bolt on and centre on Mercedes S-Classe W140 without rings. You still need to check the offset and tyres, detailed below.

Mercedes A-Classe W177from 2018Mercedes S-Classe W1401991–1998
PCD5x1125x112
Centre bore66.6 mm66.6 mm
ThreadM14x1.50M14x1.50
Original wheels 6.5Jx16 ET44 ≈7.5Jx16 ET46

≈: width estimated from the original tyre size.

Wheel by wheel: offset and tyres

Each original wheel from Mercedes A-Classe W177 is compared with the one from Mercedes S-Classe W140 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 ET44 · 205/60R16 — Fits like the original

    Compared with the original ≈7.5Jx16 ET46 on Mercedes S-Classe W140: shock absorber side −14.7 mm, wheel arch side −10.7 mm, tyre diameter −5.2 % : fit it with the original tyre size of Mercedes S-Classe W140 (235/60R16), not that of Mercedes A-Classe W177. 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 Mercedes S-Classe W140 (M14x1.50), 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 Mercedes S-Classe W140 on Mercedes A-Classe W177?