2021 Ford S-MAX tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x108 on every 2021 trim.

Tires for the 2021 Ford S-MAX

Sizes most trims come with first. Open your trim below for its exact size.

235/55R17 Best-rated standard on 3 trims

Check price on Amazon · 235/55R17
235/50R18 Best-rated optional on 3 trims

Check price on Amazon · 235/50R18
245/45R19 Best-rated optional on 3 trims

Check price on Amazon · 245/45R19

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Trims sold in 2021: 3
Generation: II (CD539)
Other years: 2016
2017
2018
2019
2020
2021
2022
2023
All years (2006–2023)

3 trims sold in 2021

Open a trim for its tire and rim sizes, bolt pattern and tire pressure. Trims with the same tires and wheels share a row.

Ford S-MAX II (CD539)

2020–2023 3 trims

S-MAX 2.0 EcoBlue +2 variants 148 hp · 2.0L I4 · Diesel 235/55R17 103W 5 fitments

Same tires and wheels on: 2.5 Duratec FHEV

Generation: Facelift · 2020–2023
Power: 148 hp
Engine: 2.0L I4, Diesel
Center bore: 63.4 mm
Bolt pattern: 5x108
Thread: M14 x 1.5

Check price on Amazon · 235/55R17 Wheels 17x7.5 ET55 · 5x108 · 63.4 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
235/55R17 103W	Rim 17x7.5 ET55 ~~5x108~~	38 psi
235/50R18 101W	Rim 18x7.5 ET55 ~~5x108~~	35 psi
245/45R19 102W	Rim 19x8 ET55 ~~5x108~~	38 psi
235/55R17 103V	Rim 17x7.5 ET55 ~~5x108~~	35 psi
235/50R18 101Y	Rim 18x7.5 ET55 ~~5x108~~	38 psi

How to read 103W: 103 is the load index (up to 1,929 lb / 875 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET55 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

What these columns mean

Rim size: Rim diameter × width in inches, and the factory offset (ET) in millimetres, e.g. 18x7.5 ET25.
Bolt pattern (PCD): Number of studs and the diameter of the circle they sit on. It must match exactly.
Center bore: Diameter of the hub hole. Larger aftermarket bores need hub-centric rings.
Pressure: Recommended cold inflation pressure for that axle, in psi.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.