WheelOffset

2003 Cadillac CTS Wheel Offset

Quick specs

Wheel size
Multiple — see configurations
Offset
Multiple — see configurations
Backspacing
Multiple — see configurations
Bolt pattern
5×115
Center bore
70.3 mm
Thread
M12×1.5
Tire size
Multiple — see configurations

OEM configurations

ConfigurationFrontRearOffsetBackspacingTireBolt patternCenter boreThread
3.2i · 3.2L, LA3, V6, Petrol7x167.5x18ET51 / ET505.51 in225/55R16 / 225/45R185x11570.3 mmM12 x 1.5
3.2i · 3.2L, LA3, V6, Petrol7.5x177.5x18ET51 / ET505.76 in225/50R17 / 225/45R185x11570.3 mmM12 x 1.5
3.2i · 3.2L, LA3, V6, Petrol8x187.5x18ET46 / ET505.81 in245/40R18 / 225/45R185x11570.3 mmM12 x 1.5
3.2i · 3.2L, LA3, V6, Petrol7x16—ET515.51 in225/55R165x11570.3 mmM12 x 1.5
3.2i · 3.2L, LA3, V6, Petrol7.5x17—ET515.76 in225/50R175x11570.3 mmM12 x 1.5
3.2i · 3.2L, LA3, V6, Petrol8x18—ET455.77 in245/40R185x11570.3 mmM12 x 1.5
3.2i · 3.2L, LA3, V6, Petrol9x19—ET436.19 in255/35R195x11570.3 mmM12 x 1.5
2.6i · 2.6L, LY9, V6, Petrol7x167.5x18ET51 / ET505.51 in225/55R16 / 225/45R185x11570.3 mmM12 x 1.5
2.6i · 2.6L, LY9, V6, Petrol7.5x177.5x18ET51 / ET505.76 in225/50R17 / 225/45R185x11570.3 mmM12 x 1.5
2.6i · 2.6L, LY9, V6, Petrol8x197.5x18ET45 / ET505.77 in235/40R19 / 225/45R185x11570.3 mmM12 x 1.5

Wheels and hardware

More on Amazon

  • No exact catalog match in inventory

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Lug hardware

More on Amazon

  • White Knight 1707SBK-20AM Black Chrome M12x1.50 Bulge Acorn Lug Nut, 20 Pack

    Confirmed vehicle catalog match. Confirm seat type for your wheel.

    Check price on Amazon

  • White Knight 1707S-20AM Chrome M12x1.50 Bulge Acorn Lug Nut, 20 Pack

    Confirmed vehicle catalog match. Confirm seat type for your wheel.

    Check price on Amazon

  • MIKKUPPA M12x1.5 Lug Nuts - Replacement for 2006-2019 Ford Fusion, 2000-2019 Ford Focus, 2001-2019 Ford Escape Aftermarket Wheel - 20pcs Chrome Closed End Lug Nuts

    Confirmed vehicle catalog match. Confirm seat type for your wheel.

    Check price on Amazon

Wheel locks

More on Amazon

  • MCGARD Chrome Cone Seat M12 x 1.5 Wheel Locks

    M12 x 1.5 · lock

    Matches M12 x 1.5 — confirm seat style for your wheel

    Check price on Amazon

  • Gorilla Automotive Wheel Locks With Washer (M12x1.50)

    M12 x 1.5 · lock

    Matches M12 x 1.5 — confirm seat style for your wheel

    Check price on Amazon

Real-World 2003 Cadillac CTS 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 — 2 documented builds

2 documented builds.

2003 Cadillac CTS custom wheel setup

Staggered · 19×8.5 ET15 / Rear unknown

Documented on a 2003 Cadillac CTS build — observed custom fitment, not a universal fit guarantee.

Wheel: ADR M-Sport

Front
19×8.5 ET15 · 235/35R19
Rear
—
Compared with OEM

Compared with the 19×8 ET45 OEM configuration. Calculated geometry only — not fit confirmation.

  • Outer edge 36.3 mm farther toward fender (more outward poke)
  • Inner edge 23.7 mm farther from suspension (more inner clearance)
  • Width +0.5" vs OEM
View full build on Modified1
2003 Cadillac CTS custom wheel setup

Staggered · 19×8.5 ET15 / Rear unknown

Documented on a 2003 Cadillac CTS build — observed custom fitment, not a universal fit guarantee.

Wheel: ADR M-Sport

Front
19×8.5 ET15 · 235/35R19
Rear
—
Compared with OEM

Compared with the 19×8 ET45 OEM configuration. Calculated geometry only — not fit confirmation.

  • Outer edge 36.3 mm farther toward fender (more outward poke)
  • Inner edge 23.7 mm farther from suspension (more inner clearance)
  • Width +0.5" 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.

Open full fitment calculator

More specs for the 2003 Cadillac CTS

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.