2004 Cadillac CTS-V
Direct Fit- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
- Wheel geometryCompatible with OEM envelope
Geometry within known OEM envelope (approx. outer change -2.18 mm, inner change -4.18 mm vs mid OEM).
2005 Cadillac CTS-V Wheel Interchange
OEM wheel and tire fitment specs for the 2005 Cadillac CTS-V, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.
2005 Cadillac CTS-V Fitment Specs
Baseline mounting dimensions used for interchange decisions.
Bolt Pattern6x115
Center Bore70.3 mm
Lug ThreadM12 x 1.5
OEM Wheel Sizes18" – 20"
OEM Widths8.5" – 9"
OEM Offset Range40 mm – 42 mm
Wheels That Interchange With a 2005 Cadillac CTS-V
Results are evaluated from bolt pattern, center bore direction, OEM width/offset envelope, and lug hardware – not bolt pattern alone.
Direct Fit
2006 Cadillac CTS-V
Direct Fit- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
- Wheel geometryCompatible with OEM envelope
Geometry within known OEM envelope (approx. outer change -2.18 mm, inner change -4.18 mm vs mid OEM).
2007 Cadillac CTS-V
Direct Fit- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
- Wheel geometryCompatible with OEM envelope
Geometry within known OEM envelope (approx. outer change -2.18 mm, inner change -4.18 mm vs mid OEM).
Fits With Spacer
2006 Cadillac STS-V
Fits With Spacer- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
- Wheel geometryOutside OEM envelope
Potential requirementWheel spacer ≈ 7.18 mm
Potential requirement: 7.18 mm wheel spacer. Estimated outer position is about 7.18 mm farther inward than the mid OEM package.
2007 Cadillac STS-V
Fits With Spacer- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
- Wheel geometryOutside OEM envelope
Potential requirementWheel spacer ≈ 7.18 mm
Potential requirement: 7.18 mm wheel spacer. Estimated outer position is about 7.18 mm farther inward than the mid OEM package.
2008 Cadillac STS-V
Fits With Spacer- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
- Wheel geometryOutside OEM envelope
Potential requirementWheel spacer ≈ 7.18 mm
Potential requirement: 7.18 mm wheel spacer. Estimated outer position is about 7.18 mm farther inward than the mid OEM package.
2009 Cadillac STS-V
Fits With Spacer- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
- Wheel geometryOutside OEM envelope
Potential requirementWheel spacer ≈ 7.18 mm
Potential requirement: 7.18 mm wheel spacer. Estimated outer position is about 7.18 mm farther inward than the mid OEM package.
Check Fitment
2004 Cadillac SRX
Check Fitment- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
Donor width/offset sits outside the known OEM envelope for this vehicle.
2005 Cadillac SRX
Check Fitment- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
Donor width/offset sits outside the known OEM envelope for this vehicle.
2006 Cadillac SRX
Check Fitment- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
Donor width/offset sits outside the known OEM envelope for this vehicle.
2007 Cadillac SRX
Check Fitment- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
Donor width/offset sits outside the known OEM envelope for this vehicle.
2008 Cadillac SRX
Check Fitment- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
Donor width/offset sits outside the known OEM envelope for this vehicle.
2009 Cadillac SRX
Check Fitment- Bolt pattern6x115 · Match
- Center bore70.3 mm · Match
Donor width/offset sits outside the known OEM envelope for this vehicle.
Cadillac CTS-V Years With Compatible Wheels
Only years with evidence-based interchange relationships are listed. Adjacent years are not assumed compatible.
Will Wheels From Another Vehicle Fit?
Compare a donor vehicle or custom wheel against this 2005 Cadillac CTS-V.
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2005 Cadillac CTS-V
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Specification
Wheels from
Installed on
Result (Click it)
Bolt Pattern
The total number of bolt holes and the diameter of the circle they form.
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6x115
Center Bore
The hole in the center of the wheel that fits over the vehicle’s hub.
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70.3 mm
Thread Size
The size and spacing of the threads on the bolts or nuts that hold the wheel in place.
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M12 x 1.5
Rim Diameter
The wheel diameter in inches that determines which tire sizes will fit.
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18"
Rim Width
The distance between the inner edges of the wheel is measured in inches.
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8.5"
Wheel Offset
How far the wheel sits inward or outward relative to the hub mounting surface.
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42 mm
Backspacing
Shows how much space the wheel takes up toward the inside of the vehicle.
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Wheel Fasteners
The type of hardware used to secure the wheel to the vehicle.
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Wheel Fitment Parts for the 2005 Cadillac CTS-V
Products below are matched to required fitment dimensions from our parts inventory. Confirm seat style, thickness, and clearance before ordering.
Lug Nuts / Wheel Bolts
M12 x 1.5
White Knight Chrome M12x1.50 Bulge Acorn Lug Nut, 20 Count
M12 x 1.5 · Confirm wheel seat style before ordering
View on Amazon →
White Knight 3807BK-20AM Black Chrome M12x1.50 Spline Lug Nut, 20 items
M12 x 1.5 · Confirm wheel seat style before ordering
View on Amazon →
White Knight 3807XL-25AM Chrome M12x1.50 Lug Nuts
M12 x 1.5 · Confirm wheel seat style before ordering
View on Amazon →As an Amazon Associate we earn from qualifying purchases. Product availability and pricing may change.
Why These Wheels Fit
Wheel interchange depends on more than bolt pattern. Where data is available, this site compares:
- Bolt pattern / PCD
- Center bore direction (donor wheel bore must not be smaller than the hub)
- Wheel diameter, width, and offset against known OEM ranges
- Lug thread / hardware differences (vehicle-side hardware)
A normal wheel spacer does not change bolt pattern. Hub rings cannot enlarge a wheel bore that is smaller than the hub. Brake clearance and tire package fitment still require vehicle-specific checks when not confirmed in the dataset.
2005 Cadillac CTS-V Wheel Fitment Guide | wheelinterchange.com
Known OEM Fitment For 2005 Cadillac CTS-V
The specs below reflect known factory equipment for the 2005 Cadillac CTS-V. If your vehicle has dealer packages or prior modifications, confirm each item using the on-page calculator and your owner’s manual or OEM parts catalog.
| Bolt pattern | 6x115 |
| Center bore | 70.3 mm |
| Thread size | M12 x 1.5 |
| Rim diameter | 18 in |
| Rim width | 8.5 in |
| Wheel offset (ET) | 42 mm |
| Backspacing | 5.9 in |
| OEM tire size | 245/45R18 |
Notes:
- Torque spec, wheel load rating, brake clearance, and exact TPMS details are not provided here and may vary by market or package. Verify with the service manual and parts catalog for your VIN.
- The CTS-V uses performance brakes. Spoke and barrel clearance should be checked carefully when changing wheel width or offset.
How To Use The Wheel Interchange Calculator
- Open the calculator on this page. In “Installed on (your vehicle)”, choose 2005 Cadillac CTS-V.
- In “Wheels from (donor vehicle)”, pick the vehicle you want to compare against, or select Custom.
- Use “Custom wheel size” to set rim diameter, width, and offset you are considering.
- Use “Custom tire size” to adjust section width and aspect ratio. When you change rim diameter, the tool updates tire diameter in the comparison so you can see height and speedometer effects.
- Review the readouts for inner clearance to suspension/brakes, outer poke to fender, backspacing change, and overall tire diameter difference.
- If any value shows reduced inner clearance, increased poke, or large tire diameter change, re-adjust the size until measurements are within safe limits for your use case.
Fitment Checklist Before You Buy
- Bolt pattern and hub bore: Wheel must be 6x115 and fit a 70.3 mm hub. If the wheel bore is larger, plan hub-centric rings sized from the wheel bore to 70.3 mm.
- Brake clearance: The CTS-V’s performance calipers may limit spoke design. Ask the wheel maker for a brake template or test-fit.
- Offset and backspacing: Compare your choice against OEM ET 42 and backspacing 5.9 in using the calculator. Ensure inner barrel and outer fender clearance remain safe.
- Tire diameter: Keep overall diameter close to OEM to maintain speedometer accuracy and ABS/traction behavior.
- Load rating: Wheels and tires must meet or exceed the vehicle’s axle load ratings. Check the door jamb label and manufacturer specs.
- Stud engagement: With M12 x 1.5 hardware, target at least one full stud diameter of thread engagement. Avoid short shank nuts on thick aftermarket wheel pads.
- TPMS: 2005 systems can vary by market. Confirm sensor type and frequency for your VIN. Plan bands or stem sensors as required.
- Spacers or adapters: Only use hub-centric, high-quality parts if absolutely necessary, and confirm extended stud length and fender coverage comply with local laws.
Plus Sizing And Common Upgrades
Owners often explore +1 or +2 wheel diameter changes for appearance and handling. Exact fitment depends on width, offset, tire choice, and brake and fender clearances. Because these vary by wheel model and tire brand, use the calculator to simulate:
- +1 to 19 in: Typically paired with a lower tire aspect ratio to maintain overall diameter. Verify inner and outer clearances.
- +2 to 20 in: Style-focused setups may require tighter offset control and careful tire selection. Check ride quality and pothole risk.
- Wider tires: Modest increases can improve grip. Use the calculator to ensure sidewall-to-strut and fender clearance remain safe under compression and steering lock.
Since exact safe limits depend on your suspension height, alignment, and tire model, confirm with physical measurements and the calculator before purchase.
Installation Tips
- Clean the hub face and wheel mounting pad to remove rust and debris. Any stack-up can cause runout or loose lugs.
- If using hub-centric rings, seat them fully in the wheel bore and ensure a snug fit on the 70.3 mm hub.
- Hand start all six lug nuts to avoid cross-threading. Tighten in a star pattern.
- Torque to the factory specification for your VIN using a calibrated torque wrench. Do not guess the value.
- After 50-100 miles, recheck torque and inspect for any rubbing at full steering lock and over bumps.
- Set tire pressures to the door placard values, then align the vehicle if you changed sizes or offset.
Tools And Helpful Supplies
- 1/2 inch drive torque wrench: Shop options
- Floor jack and jack stands
- Breaker bar and 19 mm socket or size that matches your lug nuts
- Wire brush and brake cleaner for hub face
- Tire pressure gauge: Shop options
- Digital caliper for measuring hub bore and stud length: Shop options
- Hub-centric rings sized to 70.3 mm vehicle hub if your wheel bore is larger: Shop options
FAQs
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What is the bolt pattern on the 2005 Cadillac CTS-V?
6x115.
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What is the factory wheel size and offset?
18x8.5 with ET 42 and about 5.9 in backspacing, paired with 245/45R18 tires.
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Will 5x115 wheels fit my CTS-V?
No. The car uses 6x115. Adapters would be required, which add complexity and clearance risks. Use 6x115 wheels for a direct fit.
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Do I need hub-centric rings?
Only if your aftermarket wheel center bore is larger than 70.3 mm. Select rings that reduce the wheel bore to 70.3 mm.
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What offset range works with wider wheels?
Exact safe offsets vary by wheel width, tire model, and brake and fender clearances. Use the calculator to compare against OEM ET 42, then test-fit when possible.
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What is the correct lug nut size?
Thread size is M12 x 1.5. Match the lug seat type to your wheel design and torque to the OEM spec in the service manual.
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Will changing rim diameter affect my speedometer?
It can. Keep overall tire diameter close to OEM. The calculator shows tire diameter difference when you change wheel or tire sizes.
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How can I check brake clearance?
Ask the wheel manufacturer for a brake template, or measure the inner barrel and spoke profile against your calipers. Always test-fit before mounting tires when possible.
