Yes, the hub is identical
Same 5x120 PCD and same 72.5 mm centre bore: wheels from BMW 3 Serie Gran Turismo F34 bolt on and centre on BMW X1 E84 without rings. You still need to check the offset and tyres, detailed below.
≈: width estimated from the original tyre size.
Wheel by wheel: offset and tyres
Each original wheel from BMW 3 Serie Gran Turismo F34 is compared with the one from BMW X1 E84 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.
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8Jx17 ET34 · 225/55R17 — Check on the car
Compared with the original 7.5Jx17 ET34 on BMW X1 E84: shock absorber side +6.3 mm, wheel arch side +6.3 mm, tyre diameter +3.4 % : fit it with the original tyre size of BMW X1 E84 (225/50R17), not that of BMW 3 Serie Gran Turismo F34.
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 X1 E84 (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 BMW X1 E84 on BMW 3 Serie Gran Turismo F34?