2015 Cadillac ATS tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x115 on every 2015 trim.

Tires for the 2015 Cadillac ATS

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

  1. 225/40R18 Best-rated standard on 3 trims · optional on 3
  2. 225/45R17 Best-rated standard on 2 trims · optional on 1
  3. 225/40R18 front + 255/35R18 rear Best-rated standard on 2 trims

Also listed: 225/35R19 225/35R19 + 265/30R19

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Trims sold in 2015
7
Generation
GM Alpha II

7 trims sold in 2015

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

Cadillac ATS GM Alpha II

2015–2019 7 trims
ATS 2.0Ti 272 hp · LTG B20NHT I4 225/40R18 88W / 255/35R18 90W 3 fitments
Generation
GM Alpha II · 2015–2019
Power
272 hp
Engine
LTG B20NHT I4, Petrol
Center bore
70.3 mm
Bolt pattern
5x115
Thread
M12 x 1.5
Tire sizeRim size and bolt patternPressure, psi
Front225/40R18 88WRim 18x8 ET42 5x11532 psi
Rear255/35R18 90WRim 18x9 ET52 5x11535 psi
225/45R17 90VRim 17x8 ET42 5x11532 psi
225/40R18 92VRim 18x8 ET42 5x11535 psi

How to read 88W: 88 is the load index (up to 1,235 lb / 560 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET42 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

ATS 2.0Ti 272 hp · 2.0L LTG B20NHT I4 225/40R18 88W / 255/35R18 90W 2 fitments
Generation
GM Alpha II · 2015–2019
Power
272 hp
Engine
2.0L LTG B20NHT I4, Petrol
Center bore
70.3 mm
Bolt pattern
5x115
Thread
M12 x 1.5
Tire sizeRim size and bolt patternPressure, psi
Front225/40R18 88WRim 18x8 ET32 5x11535 psi
Rear255/35R18 90WRim 18x9 ET32 5x11540 psi
Front225/35R19 87YRim 19x8 ET32 5x11535 psi
Rear265/30R19 90YRim 19x9 ET32 5x11540 psi

How to read 88W: 88 is the load index (up to 1,235 lb / 560 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET32 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

ATS 2.0Ti AWD +1 variant 272 hp · 2.0L LTG B20NHT I4 225/45R17 90V 3 fitments

Same tires and wheels on: 2.5i

Generation
GM Alpha II · 2015–2019
Power
272 hp
Engine
2.0L LTG B20NHT I4, Petrol
Center bore
70.3 mm
Bolt pattern
5x115
Thread
M12 x 1.5
Tire sizeRim size and bolt patternPressure, psi
225/45R17 90VRim 17x8 ET42 5x11532 psi
225/40R18 92VRim 18x8 ET42 5x11535 psi
225/40R18 88WRim 18x9 ET52 5x11535 psi

How to read 90V: 90 is the load index (up to 1,323 lb / 600 kg per tire) and V the speed rating (up to 149 mph / 240 km/h). ET42 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

ATS 3.6i 321 hp · 3.6L LFX V6 225/40R18 88W 2 fitments
Generation
GM Alpha II · 2015–2019
Power
321 hp
Engine
3.6L LFX V6, Petrol
Center bore
70.3 mm
Bolt pattern
5x115
Thread
M12 x 1.5
Tire sizeRim size and bolt patternPressure, psi
225/40R18 88WRim 18x9 ET32 5x11535 psi
225/35R19 87YRim 19x9 ET32 5x11535 psi

How to read 88W: 88 is the load index (up to 1,235 lb / 560 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET32 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

ATS 3.6i 321 hp · 3.6L LFX V6 225/40R18 92V 3 fitments
Generation
GM Alpha II · 2015–2019
Power
321 hp
Engine
3.6L LFX V6, Petrol
Center bore
70.3 mm
Bolt pattern
5x115
Thread
M12 x 1.5
Tire sizeRim size and bolt patternPressure, psi
225/40R18 92VRim 18x8 ET42 5x11535 psi
225/40R18 88WRim 18x9 ET52 5x11535 psi
225/35R19 87YRim 19x9 ET52 5x11535 psi

How to read 92V: 92 is the load index (up to 1,389 lb / 630 kg per tire) and V the speed rating (up to 149 mph / 240 km/h). ET42 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

ATS 3.6i AWD 321 hp · 3.6L LFX V6 225/40R18 92V 3 fitments
Generation
GM Alpha II · 2015–2019
Power
321 hp
Engine
3.6L LFX V6, Petrol
Center bore
70.3 mm
Bolt pattern
5x115
Thread
M12 x 1.5
Tire sizeRim size and bolt patternPressure, psi
225/40R18 92VRim 18x8 ET42 5x11535 psi
225/40R18 88WRim 18x9 ET52 5x11535 psi
225/35R19 88YRim 19x9 ET52 5x11535 psi

How to read 92V: 92 is the load index (up to 1,389 lb / 630 kg per tire) and V the speed rating (up to 149 mph / 240 km/h). ET42 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.
Staggered
A wider tire on the rear axle than the front. Front-to-back rotation is not possible.
Thread size
Lug bolt or nut thread — needed when buying aftermarket fasteners.
Trims sold in 2015
7
Generation
GM Alpha II
Other years
All years (2013–2019)

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