WheelOffset

2005 Cadillac CTS-V Wheel Offset

Quick specs

Wheel size
8.5x18 · 8.5x19 · 9x20
Offset
ET42 · ET40
Backspacing
5.90 in · 6.07 in
Bolt pattern
6×115
Center bore
70.3 mm
Thread
M12×1.5
Tire size
245/45R18 · 245/40R19 · 245/35R20

OEM configurations

ConfigurationFrontRearOffsetBackspacingTireBolt patternCenter boreThread
5.7i · 5.7L, LS6, V8, Petrol8.5x188.5x19ET425.90 in245/45R18 / 245/40R196x11570.3 mmM12 x 1.5

Wheels and hardware

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Lug hardware

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  • M14x1.5 Lug Nuts Black with Spline Tuner, XL 2 inches Length Conical Aftermarket Wheel Nut, Compatible with Chevy GMC Ford Cadillac Lincoln SAAB Saturn Silverado 1500 Savana, Set of 24

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

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  • 14mmx1.5 Wheel Lug Nuts, 24x Black M14x1.5 Lug Nut, Conical/Cone Bulge Seat, dynofit Closed End Lug Nuts with 2 Socket Keys for Chevy GMC Cadillac Lincoln SAAB Saturn 6 Lug Aftermarket Wheel

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

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

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

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Wheel locks

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  • 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

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

    M12 x 1.5 · lock

    Matches M12 x 1.5 — confirm seat style for your wheel

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Real-World 2005 Cadillac CTS-V 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:

  • 18-inch — 1 documented build

1 documented build.

2005 Cadillac CTS-V custom wheel setup

Staggered · 18×8.5 ET42 / Rear unknown

Documented on a 2005 Cadillac CTS-V build — observed custom fitment, not a universal fit guarantee.

Wheel: Rota Torques

Front
18×8.5 ET42
Rear
—
Compared with OEM

Compared with the 18×8.5 ET42 OEM configuration. Calculated geometry only — not fit confirmation.

  • Outer position unchanged
  • Inner position unchanged
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: 18×8.5 ET42 · 245/45R18 · Front · 5.7i · 5.7L, LS6, V8, Petrol

  • Outer: +0 mm
  • Inner clearance: 0 mm unchanged

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More specs for the 2005 Cadillac CTS-V

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.