WheelOffset

2008 Cadillac CTS Wheel Offset

ET48 · ET45

Quick specs

OEM offset
ET48 · ET45
Wheel size
8x17 · 8x18 · 8.5x19 · 9x19
Backspacing
5.89 in · 6.14 in · 6.27 in
Bolt pattern
5×120
Center bore
67 mm, 66.9 mm
Tire size
235/55R17 · 235/50R18 · 245/45R19 · 255/40R19

OEM configurations

ConfigurationFrontRearOffsetBackspacingTireBolt patternCenter boreThread
3.0i · 3.0L, LFW, V6, Petrol8x178.5x19ET485.89 in235/55R17 / 245/45R195x12066.9 mmM14 x 1.5
3.0i · 3.0L, LFW, V6, Petrol8x188.5x19ET485.89 in235/50R18 / 245/45R195x12066.9 mmM14 x 1.5
3.6i · 3.6L, LLT, V6, Petrol8x188.5x19ET485.89 in235/50R18 / 245/45R195x12066.9 mmM14 x 1.5
3.6i · 3.6L, LLT, V6, Petrol8x188.5x19ET485.89 in235/50R18 / 245/45R195x12066.9 mmM14 x 1.5
2.8i · 2.8L, V6, Petrol8x188.5x19ET485.89 in235/50R18 / 245/45R195x12066.9 mmM14 x 1.5

See how a different wheel would sit See wheel backspacing

What happens if you change the offset?

Compare your own setup

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

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Wheels and hardware for this vehicle

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Lug hardware

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  • Gorilla Automotive 21133HT Small Diameter Acorn Chrome 5 Lug Kit (12mm x 1.50 Thread Size) Pack Of 20

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

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  • Dorman 611-236 Wheel Nut M14-1.50 Flattop Nut - 22mm Hex, 44.5mm Length Compatible with Select Models, 10 Pack (OE Fix)

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

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  • White Knight 1309-1S-20AM Chrome M14x1.50 Open-End 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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Real-World 2008 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:

  • 20-inch — 1 documented build

1 documented build.

2008 Cadillac CTS custom wheel setup

Staggered · 20×? / Rear unknown

Documented on a 2008 Cadillac CTS build — observed custom fitment, not a universal fit guarantee.

Wheel: Giovanna Gianelle Spezia-5

Front
20×?
Rear
—
Compared with OEM

Compared with the 18×8 ET48 OEM configuration. Calculated geometry only — not fit confirmation.

  • Diameter +2" vs OEM
View full build on Modified1

More specs for the 2008 Cadillac CTS

OEM offsets are catalog configurations, not an aftermarket “safe ET range.” Matching offset alone does not confirm clearance. Documented custom builds are observed setups only.