tirewheelguide

2018 Audi S4 tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x112 on every 2018 trim.

Tires for the 2018 Audi S4

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

  1. 245/40R18 Best-rated standard on 3 trims · USA, Europe, Japan
    Check price on Amazon · 245/40R18
  2. 245/35R19 Best-rated optional on 3 trims · USA, Europe, Japan
    Check price on Amazon · 245/35R19
  3. 255/30R20 Best-rated optional on 3 trims · USA, Europe, Japan
    Check price on Amazon · 255/30R20

Also listed: 225/45R18

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Trims sold in 2018
3
Generation
B9 sold in 3 market versions

3 trims sold in 2018

Sold in 3 market versions. Open a trim for its tire and rim sizes, bolt pattern and tire pressure.

Audi S4 B9

2016–2019 3 trims

Europe

1 trim
S4 3.0TFSi 349 hp · CWGD V6 245/40R18 93Y 4 fitments
Generation
B9 · 2016–2019
Market
Europe
Power
349 hp
Engine
CWGD V6, Petrol
Center bore
66.5 mm
Bolt pattern
5x112
Thread
M14 x 1.5
Check price on Amazon · 245/40R18 Wheels 18x8 ET40 · 5x112 · 66.5 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
245/40R18 93YRim 18x8 ET40 5x11236 psi
225/45R18 95HRim 18x7.5 ET39 5x11236 psi
245/35R19 93YRim 19x8.5 ET40 5x11239 psi
255/30R20 93ZRim 20x9 ET35 5x11239 psi

How to read 93Y: 93 is the load index (up to 1,433 lb / 650 kg per tire) and Y the speed rating (up to 186 mph / 300 km/h). ET40 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

Japan

1 trim
S4 3.0TFSi (ABA-8WCWGF) 349 hp · CWG V6 245/40R18 93Y 3 fitments
Generation
B9 · 2016–2019
Market
Japan
Power
349 hp
Engine
CWG V6, Petrol
Center bore
66.5 mm
Bolt pattern
5x112
Thread
M14 x 1.5
Check price on Amazon · 245/40R18 Wheels 18x8 ET40 · 5x112 · 66.5 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
245/40R18 93YRim 18x8 ET40 5x11236 psi
245/35R19 93YRim 19x8.5 ET40 5x11239 psi
255/30R20 93ZRim 20x9 ET35 5x11239 psi

How to read 93Y: 93 is the load index (up to 1,433 lb / 650 kg per tire) and Y the speed rating (up to 186 mph / 300 km/h). ET40 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

USA

1 trim
S4 3.0TFSi 349 hp · 3.0L CWGD V6 245/40R18 93Y 4 fitments
Generation
B9 · 2016–2019
Market
USA
Power
349 hp
Engine
3.0L CWGD V6, Petrol
Center bore
66.5 mm
Bolt pattern
5x112
Thread
M14 x 1.5
Check price on Amazon · 245/40R18 Wheels 18x8 ET40 · 5x112 · 66.5 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
245/40R18 93YRim 18x8 ET40 5x11236 psi
225/45R18 95HRim 18x7.5 ET39 5x11236 psi
245/35R19 93YRim 19x8.5 ET40 5x11239 psi
255/30R20 93ZRim 20x9 ET35 5x11239 psi

How to read 93Y: 93 is the load index (up to 1,433 lb / 650 kg per tire) and Y the speed rating (up to 186 mph / 300 km/h). ET40 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

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.
Trims sold in 2018
3
Generation
B9 sold in 3 market versions
Other years
All years (1991–2025)

Considering a different size?

Compare your current tire size with the one you want: diameter change, ground clearance and speedometer error.

Open the size calculator

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