2015 Cadillac ATS Wheel Offset

Quick specs

Wheel size: 8x17 · 8x18 · 8x19
Offset: ET42 · ET32
Backspacing: 5.65 in · 5.26 in
Bolt pattern: 5×115
Center bore: 70.3 mm
Thread: M12×1.5
Tire size: 225/45R17 · 225/40R18 · 225/35R19

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Showing matching bolt patterns and offsets up to 30 mm lower. Confirm center bore, load rating, and clearance at Tire Rack.

Configuration

Platinum Genesis
17 × 7.5″ · ET +35 · Machined w/Black Accent
$213.50
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OEM configurations

Configuration	Front	Rear	Offset	Backspacing	Tire	Bolt pattern	Center bore	Thread
2.0Ti · 2.0L, LTG B20NHT, I4, Petrol	8x17	8x18	ET42	5.65 in	225/45R17 / 225/40R18	5x115	70.3 mm	M12 x 1.5
2.0Ti · 2.0L, LTG B20NHT, I4, Petrol	8x18	8x18	ET42	5.65 in	225/40R18	5x115	70.3 mm	M12 x 1.5
2.0Ti AWD · 2.0L, LTG B20NHT, I4, Petrol	8x17	8x18	ET42	5.65 in	225/45R17 / 225/40R18	5x115	70.3 mm	M12 x 1.5
2.0Ti AWD · 2.0L, LTG B20NHT, I4, Petrol	8x18	8x18	ET42	5.65 in	225/40R18	5x115	70.3 mm	M12 x 1.5
2.5i · 2.5L, LCV, I4, Petrol	8x17	8x18	ET42	5.65 in	225/45R17 / 225/40R18	5x115	70.3 mm	M12 x 1.5
2.5i · 2.5L, LCV, I4, Petrol	8x18	8x18	ET42	5.65 in	225/40R18	5x115	70.3 mm	M12 x 1.5
3.6i · 3.6L, LFX, V6, Petrol	8x18	8x18	ET42	5.65 in	225/40R18	5x115	70.3 mm	M12 x 1.5
3.6i AWD · 3.6L, LFX, V6, Petrol	8x18	8x18	ET42	5.65 in	225/40R18	5x115	70.3 mm	M12 x 1.5

Lug hardware

Wheel locks

Real-World 2015 Cadillac ATS Wheel Setups

Observed aftermarket setups from documented Modified1 builds. These are individual build records — not OEM specifications and not clearance guarantees for every vehicle.

Common custom wheel sizes

Among builds in our database for this model year:

19-inch — 3 documented builds
20-inch — 2 documented builds
18-inch — 1 documented build

6 documented builds.

Diameter

Staggered · 20×? / Rear unknown

Documented on a 2015 Cadillac ATS build — observed custom fitment, not a universal fit guarantee.

Wheel: TSW Bathurst

Front: 20×?
Rear: —

Compared with OEM

Compared with the 18×8 ET42 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +2" vs OEM

View full build on Modified1

Staggered · 19×? / Rear unknown

Documented on a 2015 Cadillac ATS build — observed custom fitment, not a universal fit guarantee.

Wheel: Savini BM12

Front: 19×?
Rear: —

Compared with OEM

Compared with the 18×8 ET42 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 19×? / Rear unknown

Documented on a 2015 Cadillac ATS build — observed custom fitment, not a universal fit guarantee.

Wheel: TSW Ascent

Front: 19×?
Rear: —

Compared with OEM

Compared with the 18×8 ET42 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 19×? / Rear unknown

Documented on a 2015 Cadillac ATS build — observed custom fitment, not a universal fit guarantee.

Wheel: TSW Chicane

Front: 19×?
Rear: —

Compared with OEM

Compared with the 18×8 ET42 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 18×? / Rear unknown

Documented on a 2015 Cadillac ATS build — observed custom fitment, not a universal fit guarantee.

Wheel: TSW Chicane

Front: 18×?
Rear: —

Compared with OEM

Compared with the 18×8 ET42 OEM configuration. Calculated geometry only — not fit confirmation.

View full build on Modified1

Staggered · 20×? / Rear unknown

Documented on a 2015 Cadillac ATS build — observed custom fitment, not a universal fit guarantee.

Wheel: Status Haze

Front: 20×?
Rear: —

Compared with OEM

Compared with the 18×8 ET42 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +2" vs OEM

View full build on Modified1

Compare your own setup

See how a different width or offset sits versus an OEM configuration for this year.

OEM baseline

Open full fitment calculator

More specs for the 2015 Cadillac ATS

Each OEM row is a catalog configuration. Offset ranges are not collapsed when the database has exact setups. Documented aftermarket builds are observed setups only — not universal fit or clearance confirmation.