Wheels from Ford Focus ST on Ford Focus RS: compatible?

Yes, the hub is identical

Same 5x108 PCD and same 63.4 mm centre bore: wheels from Ford Focus ST bolt on and centre on Ford Focus RS without rings. You still need to check the offset and tyres, detailed below.

Ford Focus ST2005–2013Ford Focus RS2002–2003
PCD5x1084x108 / 5x108
Centre bore63.4 mm63.4 mm
ThreadEcrous - 12x1.50Ecrous - 12x1.50
Original wheels 8Jx18 ET52.5 R
≈7Jx18 ET50
≈7.5Jx18 ET60

≈: width estimated from the original tyre size.

Wheel by wheel: offset and tyres

Each original wheel from Ford Focus ST is compared with the one from Ford Focus RS 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.

  • 8Jx18 ET52.5 · 225/40R18 — Check on the car

    Compared with the original ≈7.5Jx18 ET60 on Ford Focus RS: shock absorber side −1.2 mm, wheel arch side +13.9 mm, tyre diameter −1.2 %. 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 Ford Focus RS (Ecrous - 12x1.50), 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 Ford Focus RS on Ford Focus ST?