2009 Cadillac CTS Wheel Interchange

OEM wheel and tire fitment specs for the 2009 Cadillac CTS, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.

Recorded OEM specifications for the 2009 Cadillac CTS, donor years with overlapping ranges, and a calculator to compare a selected wheel. Range overlap is not a guaranteed fit.

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2009 Cadillac CTS Fitment Specs

Baseline mounting dimensions used for interchange decisions.

Bolt Pattern5x120
Center Bore66.9 mm
Lug ThreadM14 x 1.5 View M14 x 1.5 options on Amazon
OEM Wheel Sizes17" – 19"
OEM Widths8" – 9"
OEM Offset Range45 mm – 48 mm

Multiple OEM configurations exist for this vehicle. Fitment can vary by trim, brakes, and factory wheel package – confirm your exact setup before buying.

Center-bore records disagree: year-level hub 67 mm vs trim range 66.9–66.9 mm. Interchange below does not treat this as an unqualified match.

Thread-only product links are shopping examples, not verified fits. Seat style is not confirmed here. As an Amazon Associate we earn from qualifying purchases.

Donor vehicles with overlapping OEM specs

These are vehicle-year records whose recorded OEM ranges overlap this 2009 Cadillac CTS. Overlap is not a guarantee that a specific wheel will install. Selected-wheel comparison is in the calculator below.

Evaluated 46 donor years. Listed 24 eligible overlaps (not all evaluated years are compatible). Showing all listed.

2007 Cadillac CTS

Check wheel configurationCheck lug hardware: donor year M12x1.5 vs 2009 Cadillac CTS M14x1.5
  • Bolt pattern5x120 · Same recorded PCD
  • Center bore70.3 mm donor vs hub 66.9 mm
  • Wheel geometryOEM width/offset ranges overlap (not a specific wheel)

Recorded vehicle-side thread for the 2009 Cadillac CTS is M14x1.5. This donor year is recorded as M12x1.5. That is the vehicle stud/nut thread, not an intrinsic thread stamped on the wheel. Hardware must match this vehicle’s studs and the selected wheel’s seat and engagement. Existing hardware may be reusable if it already matches. Seat style is not in this dataset, so products are not a verified fit.

Dataset suggestionHub-centric rings ≈ 70.3 → 66.9 mm – not a verified installation requirement.

Hub-centric rings of about 70.3 → 66.9 mm mm may be relevant if the wheel bore is larger than the hub; they cannot enlarge a smaller bore. Recorded vehicle-side thread differs (M12x1.5 on the donor year vs M14x1.5 on the target vehicle). Hardware must match the target vehicle’s studs and the selected wheel’s seat. Existing hardware may be reusable if it already matches. Seat style is not confirmed in this dataset.

2008, 2010–2014 Cadillac CTS

Check wheel configurationCenter-bore records disagree

Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.

  • 2008
  • 2010
  • 2011
  • 2012
  • 2013
  • 2014
  • Bolt pattern5x120 · Same recorded PCD
  • Center bore66.9 mm · same recorded hub figure
  • Wheel geometryOEM width/offset ranges overlap (not a specific wheel)

Center-bore records disagree (target year-level hub 67 mm vs trim range 66.9–66.9 mm; donor year-level hub 67 mm vs trim range 66.9–66.9 mm). Unqualified overlap is not claimed until the conflict is resolved.

2015–2019 Cadillac CTS

Check wheel configurationCenter-bore records disagree

Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.

  • 2015
  • 2016
  • 2017
  • 2018
  • 2019
  • Bolt pattern5x120 · Same recorded PCD
  • Center bore66.9 mm · same recorded hub figure
  • Wheel geometryNeeds configuration check

Donor width/offset sits outside the known OEM envelope for this vehicle. Precomputed data suggested a spacer; geometry was re-checked against OEM envelope.

2019 Cadillac ATS-V

Check wheel configurationCenter-bore records disagree
  • Bolt pattern5x120 · Same recorded PCD
  • Center bore66.9 mm · same recorded hub figure
  • Wheel geometryNeeds configuration check

Donor width/offset sits outside the known OEM envelope for this vehicle. Precomputed data suggested a spacer; geometry was re-checked against OEM envelope.

2020–2022 Cadillac CT5

Check wheel configurationCenter-bore records disagree

Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.

  • 2020
  • 2021
  • 2022
  • Bolt pattern5x120 · Same recorded PCD
  • Center bore66.9 mm · same recorded hub figure
  • Wheel geometryNeeds configuration check

Donor width/offset sits outside the known OEM envelope for this vehicle. Precomputed data suggested a spacer; geometry was re-checked against OEM envelope.

2022 Cadillac CT5-V

Check wheel configurationCenter-bore records disagree
  • Bolt pattern5x120 · Same recorded PCD
  • Center bore66.9 mm · same recorded hub figure
  • Wheel geometryNeeds configuration check

Donor width/offset sits outside the known OEM envelope for this vehicle. Precomputed data suggested a spacer; geometry was re-checked against OEM envelope.

2016–2020 Cadillac CT6

Check wheel configurationCenter-bore records disagree

Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.

  • 2016
  • 2017
  • 2018
  • 2019
  • 2020
  • Bolt pattern5x120 · Same recorded PCD
  • Center bore66.9 mm · same recorded hub figure
  • Wheel geometryNeeds configuration check

Donor width/offset sits outside the known OEM envelope for this vehicle. Precomputed data suggested a spacer; geometry was re-checked against OEM envelope.

2019–2020 Cadillac CT6-V

Check wheel configurationCenter-bore records disagree

Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.

  • 2019
  • 2020
  • Bolt pattern5x120 · Same recorded PCD
  • Center bore66.9 mm · same recorded hub figure
  • Wheel geometryNeeds configuration check

Donor width/offset sits outside the known OEM envelope for this vehicle. Precomputed data suggested a spacer; geometry was re-checked against OEM envelope.

Cadillac CTS 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 2009 Cadillac CTS. Use Compare in calculator on a donor row above to fill the donor side of this same calculator.

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Selected Car:

2009 Cadillac CTS

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Specification
Wheels from
Installed on
Result (Click it)
Bolt Pattern
Bolt Pattern
The total number of bolt holes and the diameter of the circle they form.
-
5x120
Center Bore
Center Bore
The hole in the center of the wheel that fits over the vehicle’s hub.
-
66.9 mm
Thread Size
Thread Size
The size and spacing of the threads on the bolts or nuts that hold the wheel in place.
-
M14 x 1.5
Rim Diameter
Rim Diameter
The wheel diameter in inches that determines which tire sizes will fit.
-
17"
Rim Width
Rim Width
The distance between the inner edges of the wheel is measured in inches.
-
8.0"
Wheel Offset
Wheel Offset
How far the wheel sits inward or outward relative to the hub mounting surface.
-
48 mm
Backspacing
Backspacing
Shows how much space the wheel takes up toward the inside of the vehicle.
-
-
Wheel Fasteners
Wheel Fasteners
The type of hardware used to secure the wheel to the vehicle.
-
-

Wheel Fitment Parts for the 2009 Cadillac CTS

Example products matched to recorded thread, hub, or spacer dimensions. They are not verified fits. Confirm seat style, thickness, and clearance before ordering.

Lug Nuts / Wheel Bolts

M14 x 1.5

As an Amazon Associate we earn from qualifying purchases. Product availability and pricing may change.

2009 Cadillac CTS Wheel Fitment Guide | wheelinterchange.com

Known OEM Fitment For 2009 Cadillac CTS

The 2009 CTS was offered with multiple factory wheel and tire packages. The values below are confirmed OEM references for at least one 2009 CTS configuration. Other trims or packages may differ. If your car’s sticker or wheel stamping shows a different size, use that as your baseline and verify with the calculator and OEM sources.

Bolt pattern5x120
Center bore67.0 mm
Thread sizeM14 x 1.5
OEM wheel size18 x 8.0
OEM offsetET 48 mm
Backspacing5.89 in
OEM tire size235/55R17

Why you may see both 17-inch and 18-inch references: the CTS had different factory packages. Check your driver door jamb tire label, the owner manual, or the part number and size cast into the back of your current wheels to confirm what your vehicle left the factory with.

How To Use The Wheel Interchange Calculator

The calculator lets you compare a potential donor setup to your 2009 Cadillac CTS and test custom wheel and tire sizes before you buy. Quick steps:

  • Set Installed on to 2009 Cadillac CTS.
  • Set Wheels from to the donor vehicle you are considering. If unknown, leave it blank and use Custom wheel size.
  • Custom wheel size lets you enter rim diameter, width, and offset to see inner clearance and outer poke changes against your CTS baseline.
  • Custom tire size lets you enter section width and aspect ratio. Changing rim diameter updates the comparison tire diameter so you can monitor speedometer error and fender clearance.
  • Review the calculator’s clearance outputs and diameter difference. Aim to keep total tire diameter close to your verified OEM package and ensure inner and outer clearances remain safe.

Always validate final choices with a physical test fit and OEM service information, especially if your CTS has larger brakes or unique trim options.

Fitment Checklist Before You Buy

  • Bolt pattern: Your CTS uses 5x120. A different pattern is not safe.
  • Center bore: 67.0 mm at the hub. Aftermarket wheels with a larger bore will need quality hub-centric rings. A smaller bore will not fit.
  • Threads and hardware: M14 x 1.5. Match seat type to the wheel manufacturer’s requirement and ensure proper lug nut or bolt engagement. Do not mix seat styles.
  • Offset and backspacing: Compare the candidate wheel to ET 48 mm and 5.89 in backspacing references using the calculator. Verify inner clearance to strut, spring perch, and brake caliper, and outer clearance to the fender.
  • Brake clearance: Spoke shape and barrel diameter matter. If possible, use a template from the wheel maker or perform a careful test fit over your front and rear calipers.
  • Tires: Maintain adequate load index and speed rating for your CTS. Keep overall diameter close to your verified OEM package to minimize speedometer error and avoid rubbing.
  • TPMS: Plan for sensor compatibility and relearn. Frequency and part numbers vary, so confirm with OEM parts info for your VIN.
  • Suspension and alignment: Lowered cars and worn bushings reduce clearance. Budget for an alignment after wheel or tire changes.
  • AWD note: If your CTS is AWD, keep rolling diameter identical on all four corners. Avoid staggered diameters.
  • Spacers or rings: If spacers are required, they must be high quality and hub-centric with correct hub and wheel bores. Ensure sufficient thread engagement or longer hardware as required.

Plus Sizing And Common Upgrades

Plus sizing increases rim diameter and typically lowers tire aspect ratio to keep overall diameter similar. The calculator helps you visualize changes in poke, inner clearance, and diameter when moving between 17, 18, 19, or 20 inch options. Keep these points in mind:

  • Overall diameter: Keep close to your verified OEM diameter. Larger changes can affect ABS, traction control, gearing feel, and speedometer accuracy.
  • Width: Wider wheels and tires can improve grip. Confirm fender lip and liner clearance at full lock and full compression.
  • Offset: Stay near the OEM reference and validate with the calculator. Large offset changes can affect steering feel and bearing loads.
  • Square vs staggered: Square sets simplify rotation. If you consider staggered widths, ensure front and rear tire diameters remain the same and verify clearance at both axles.

If your CTS shows different OEM specs than the values above, use those as your baseline in the calculator and confirm part numbers with your dealer or trusted OEM databases before purchasing.

Installation Tips

  • Work on a level surface, support the vehicle with jack stands, and chock wheels.
  • Clean the hub face and the wheel mounting pad until bare metal. Remove rust ridges on the hub pilot for proper centering.
  • If using hub-centric rings, seat them fully and dry-fit the wheel to ensure no interference.
  • Hand start all hardware. Tighten in a star pattern. Use a torque wrench to the factory specification from your owner manual or service manual.
  • Set tire pressures to the door jamb label values for your CTS package.
  • Perform a TPMS relearn if required for your sensors.
  • Road test, then re-torque after 50 to 100 miles and recheck for any rubbing at full lock and over bumps.

Tools And Helpful Supplies

FAQs

Q: My CTS shows different factory sizes than listed. Which is correct?
A: Cadillac offered multiple packages in 2009. Use your door jamb tire label, owner manual, and the size cast into your current wheel as your baseline. Then use the calculator to compare any new setup to your verified OEM package.

Q: Will any 5x120 wheel fit my 2009 CTS?
A: Not necessarily. You must also match center bore, offset, brake clearance, and hardware requirements. Use the calculator for offset and clearance checks and verify hub bore and hardware before purchase.

Q: Can I use a 5x120.65 or 5x4.75 wheel on this car?
A: No. A different bolt circle is not safe even if it seems close. Only use the correct 5x120 pattern.

Q: Do I need hub-centric rings with aftermarket wheels?
A: If the wheel’s center bore is larger than 67.0 mm, use quality hub-centric rings to center the wheel. If the bore is smaller than 67.0 mm, the wheel will not seat on the hub.

Q: What offset range works for an upgrade?
A: Use the OEM ET 48 mm as your reference. Small changes may work, but always verify inner and outer clearances with the calculator and a test fit. The correct offset depends on wheel width, tire size, and brake package.

Q: How do I keep my speedometer accurate when upsizing wheels?
A: Keep overall tire diameter close to your verified OEM package. Use the calculator to try candidate tire sizes and aim for a small diameter difference while maintaining proper clearances.

Q: What is the correct lug nut torque?
A: Refer to the owner manual or OEM service information for your exact torque specification. Always use a calibrated torque wrench and re-torque after the first 50 to 100 miles.

Methodology and sources

Wheel interchange depends on more than bolt pattern. Where data is available, this site compares recorded OEM values:

  • 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.

Nick Marchenko

Automotive Expert