FRENES

Wheels from Alpina B3 on BMW 7 Serie G70: compatible?

Yes, with hub centric rings

Same 5x112 PCD, but the centre bore of the wheels from Alpina B3 (72.6 mm) is larger than the hub of BMW 7 Serie G70 (66.6 mm): you need 4 hub centric rings 72.6 → 66.6.

Rings 72.6 → 66.6

Alpina B32013–2019BMW 7 Serie G70from 2022
PCD5x120 / 5x1125x112
Centre bore72.6 mm66.6 mm
ThreadM12x1.50M14x1.25
Original wheels ≈7.5Jx19 ET36
≈8Jx19 ET36		 8.5Jx19 ET26

≈: width estimated from the original tyre size.

Wheel by wheel: offset and tyres

Each original wheel from Alpina B3 is compared with the one from BMW 7 Serie G70 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.

  • ≈7.5Jx19 ET36 · 245/35R19 — Fits like the original

    Compared with the original 8.5Jx19 ET26 on BMW 7 Serie G70: shock absorber side −2.7 mm, wheel arch side −22.7 mm, tyre diameter −10.1 % : fit it with the original tyre size of BMW 7 Serie G70 (245/50R19), not that of Alpina B3. Comparison for guidance only (estimated width). Check in detail

  • ≈8Jx19 ET36 · 255/35R19 — Check on the car

    Compared with the original 8.5Jx19 ET26 on BMW 7 Serie G70: shock absorber side +3.7 mm, wheel arch side −16.4 mm, tyre diameter −9.1 % : fit it with the original tyre size of BMW 7 Serie G70 (245/50R19), not that of Alpina B3. 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 BMW 7 Serie G70 (M14x1.25), 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 BMW 7 Serie G70 on Alpina B3?