OEM wheel and tire fitment specs for the 2019 Cadillac CTS, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.
Recorded OEM specifications for the 2019 Cadillac CTS, donor years with overlapping ranges, and a calculator to compare a selected wheel. Range overlap is not a guaranteed fit.
Multiple OEM configurations exist for this vehicle. Fitment can vary by trim, brakes, and factory wheel package – confirm your exact setup before buying.
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 2019 Cadillac CTS. Overlap is not a guarantee that a specific wheel will install. Selected-wheel comparison is in the calculator below.
Evaluated 39 donor years. Listed 24 eligible overlaps (not all evaluated years are compatible). Showing all listed.
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
Approximate position vs the mid OEM package: outer change -3.5 mm, inner change 3.5 mm. This uses aggregated width/offset ranges, not a specific wheel.
Check wheel configurationCheck lug hardware: donor year M12x1.5 vs 2019 Cadillac CTS M14x1.5
Bolt pattern5x120 · Same recorded PCD
Center bore70.3 mm donor vs hub 66.9 mm
Wheel geometryNeeds configuration check
Recorded vehicle-side thread for the 2019 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; clearance is not verified. Donor width/offset sits outside the known OEM envelope for this vehicle.
Dataset suggestionWheel spacer ≈ 17.85 mm – not a verified installation requirement.
A spacer of about 17.85 mm is a dataset suggestion only; clearance is not verified. Estimated outer position is about 17.85 mm farther inward than the mid OEM package.
OEM specs overlapOEM ranges overlap – confirm the specific wheel
Bolt pattern5x120 · Same recorded PCD
Center bore66.9 mm · same recorded hub figure
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
Recorded OEM bolt pattern, center bore, and width/offset ranges overlap. This is not a guarantee that every wheel from the donor year fits this vehicle.
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
Approximate position vs the mid OEM package: outer change -6.85 mm, inner change -5.85 mm. This uses aggregated width/offset ranges, not a specific wheel.
OEM specs overlapOEM ranges overlap – confirm the specific wheel
Bolt pattern5x120 · Same recorded PCD
Center bore66.9 mm · same recorded hub figure
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
Recorded OEM bolt pattern, center bore, and width/offset ranges overlap. This is not a guarantee that every wheel from the donor year fits this vehicle.
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
Recorded OEM bolt pattern, center bore, and width/offset ranges overlap. This is not a guarantee that every wheel from the donor year fits this vehicle.
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
Recorded OEM bolt pattern, center bore, and width/offset ranges overlap. This is not a guarantee that every wheel from the donor year fits this vehicle.
Cadillac CTS Years With Compatible Wheels
Only years with evidence-based interchange relationships are listed. Adjacent years are not assumed compatible.
Compare a donor vehicle or custom wheel against this 2019 Cadillac CTS. Use Compare in calculator on a donor row above to fill the donor side of this same calculator.
Compare
Compare wheel compatibility between two vehicles
Wheels from (donor vehicle)
Selected Car:
Custom wheel size (optional)
Tip: change values here to simulate custom wheels and immediately see the impact in the comparison below.
Custom tire size (optional)
Installed on (your vehicle)
Selected Car:
2019 Cadillac CTS
Compare Rims
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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5x120
Center Bore
The hole in the center of the wheel that fits over the vehicle’s hub.
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66.9 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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M14 x 1.5
Rim Diameter
The wheel diameter in inches that determines which tire sizes will fit.
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17"
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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32 mm
Backspacing
Shows how much space the wheel takes up toward the inside of the vehicle.
-
-
Wheel Fasteners
The type of hardware used to secure the wheel to the vehicle.
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-
Compare Tires
Specification
Wheels from
Installed on
Result (Click it)
Section Width
The width of the tire from sidewall to sidewall, measured in millimeters.
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-
Aspect Ratio
The height of the tire’s sidewall expressed as a percentage of its width.
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-
Diameter
The wheel diameter for which the tire is designed to fit.
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-
Tire Pressure
The recommended air pressure for safe and efficient driving.
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-
Overall Diameter
The total height of the tire and wheel combined affects clearance and speedometer accuracy.
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-
Wheel Fitment Parts for the 2019 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.
As an Amazon Associate we earn from qualifying purchases. Product availability and pricing may change.
1. Goal
Problem: you need to confirm wheel and tire fitment for a 2019 Cadillac CTS.
Goal: determine whether a donor wheel or a custom wheel/tire combo will fit safely.
This guide walks you step by step through verification, installation, and validation.
2. Prerequisites
Tools, information, and assumptions you should have before starting.
Basic tools: torque wrench, lug socket, jack and stands, caliper or ruler.
Mounting tools: wheel weights, valve tool, tire mounting or pro shop access.
OEM spec sheet or vehicle placard. If unclear, confirm with VIN or dealer.
Use the on-page calculator to compare donor wheels and custom sizes.
Assumption: provided OEM values are partial. Confirm any missing value before buying.
Known OEM fitment for 2019 Cadillac CTS
Bolt pattern (studs x PCD)
5x120
Center bore (mm)
66.9
Thread size
M14 x 1.5
Rim diameter (in)
19
Rim width (in)
8.5
Wheel offset (ET, mm)
34
Backspacing (in)
5.59
Tire section width (mm)
245
Tire aspect ratio (%)
45
Tire rim diameter (R)
17 (this may vary by trim)
Note the potential conflict: OEM rim diameter listed as 19, while tire rim diameter shows 17.
This indicates variations by trim or optional wheel packages. Use the calculator and OEM sources to validate.
3. Step by step
Follow this sequence to evaluate fitment and prepare for installation.
Verify vehicle-specific data. Check driver door jamb sticker, owner manual, or dealer for wheel options.
If values differ by trim, record which trim you have.
Confirm bolt pattern and thread. Match 5x120 studs and M14x1.5 thread for lug nut selection.
Do not proceed if donor wheel threads differ.
Check center bore. OEM center bore is 66.9 mm. If a donor wheel bore is larger, plan hub-centric rings.
If smaller, the wheel will not mount without machining or an adapter.
Compare rim diameter and width. OEM rim diameter is 19 inches and width is 8.5 inches.
If a donor wheel uses a different diameter or width, use the on-page calculator to compare overall diameter changes.
Assess offset and backspacing. OEM offset is ET 34 mm and backspacing 5.59 in.
Use the calculator to see lateral and clearance shifts when changing offset.
Verify tire compatibility. OEM tire listed as 245/45 with rim diameter R17 may indicate alternate wheel packages.
If you plan a different tire size, enter it in the calculator to update rolling diameter.
Check brake and suspension clearance. Measure caliper-to-inner-lip clearance and spoke-to-caliper clearance.
Larger diameter or wider wheel may contact calipers or suspension components.
Confirm lug nut type and seat. Use conical seat lug nuts sized for M14x1.5 thread, unless aftermarket wheels require different seats.
If using extended studs or adapters, factor in stud engagement and torque limits.
Address hub-centric fitment. If wheel bore > 66.9 mm, use hub-centric rings matched to the hub and wheel bore.
Rings help center the wheel and reduce vibration risk.
Mount, torque, and balance. Mount the tire/wheel, torque lug nuts to OEM spec, and balance at a shop.
If OEM torque is unknown, get the value from the owner manual or dealer.
Perform a staged test drive. Start with short drives and re-torque lugs after 50 to 100 miles.
Watch for vibration, noise, and ABS or TPMS warnings.
4. Validation
Confirm fitment with these measurements and checks after you assemble wheels and tires.
Wheel sits flush to hub and is fully seated. No visible gap between hub flange and wheel center.
Lug nut thread engagement meets safety rule of thumb: at least the stud diameter length engaged.
If unsure, verify with OEM torque and thread engagement guidance.
No contact at full lock and full suspension compression. Check both inner and outer clearances carefully.
Rolling diameter within acceptable tolerance. Use the calculator to compare final tire diameters and speedometer error.
No warning lights related to TPMS or ABS. If lights appear, confirm sensor compatibility and wheel electrical properties.
No vibration at highway speed after balancing. If vibration persists, re-check centering, balance, and runout.
5. Troubleshooting
Common fitment problems and practical fixes from field experience.
Rubbing on fender or control arm. Solution: reduce tire width, increase offset (move wheel inboard), or roll fender lips if minimal.
Use the calculator to test offsets before committing.
Wheel stubborn to center or vibrates. Solution: install correct hub-centric rings and re-balance.
Check wheel bore runout and hub surface for corrosion.
Lugnuts bottom out before clamping. Solution: confirm thread pitch and seat type. Do not force mismatched lug nuts.
TPMS or ABS warnings after swap. Solution: verify TPMS sensor compatibility or clone/replace sensors as needed.
ABS issues may be caused by large rolling diameter changes; revert if needed.
Speedometer error after different rolling diameter. Solution: calculate percent change with the on-page calculator and accept trade-off or reprogram.
Wheel looks off-center on hub. Solution: check hub mating surface for dirt or corrosion, then re-seat with rings or correct hub ring size.
6. Wrap up
You now have a clear process to confirm wheel and tire fitment for a 2019 Cadillac CTS.
Key recommendation: verify any conflicting specs, especially rim diameter, using VIN, dealer, or the vehicle placard.
Use the on-page calculator to model donor wheels and custom sizes before purchase.
If unsure, seek professional mounting, balancing, and inspection for safety and legal compliance.
Useful parts and tools for fitting and finishing:
Torque wrench and lug socket set - search: torque wrench
Final validation: all checks complete, no interference, correct lug engagement, and balanced wheels.
That resolves the confusion and leaves you ready to fit wheels safely and confidently.
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
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.
