OEM wheel and tire fitment specs for the 2012 Cadillac CTS, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.
Recorded OEM specifications for the 2012 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.
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 2012 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.
Check wheel configurationCheck lug hardware: donor year M12x1.5 vs 2012 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 2012 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.
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.
Donor width/offset sits outside the known OEM envelope for this vehicle. Precomputed data suggested a spacer; geometry was re-checked against OEM envelope.
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.
Donor width/offset sits outside the known OEM envelope for this vehicle. Precomputed data suggested a spacer; geometry was re-checked against OEM envelope.
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.
Donor width/offset sits outside the known OEM envelope for this vehicle. Precomputed data suggested a spacer; geometry was re-checked against OEM envelope.
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.
Compare a donor vehicle or custom wheel against this 2012 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:
2012 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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8.0"
Wheel Offset
How far the wheel sits inward or outward relative to the hub mounting surface.
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48 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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-
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 2012 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.
The information below reflects details that are known for the 2012 Cadillac CTS. Factory equipment can vary by trim, package, brake size, and market. If a value is not shown or appears to conflict, it likely varies by trim. Confirm your exact setup using your door-jamb tire label, the owner’s manual, OEM parts catalog, and the on-page calculator comparison.
Bolt pattern
5x120
Center bore
67.0 mm
Thread size
M14 x 1.5
OEM wheel size
18 x 8.0 ET48 (documented on one factory package)
Backspacing
5.89 in
Documented tire size
235/55R17 (appears on another factory package)
Notes:
The presence of both an 18 x 8.0 wheel and a 235/55R17 tire indicates multiple OEM packages for this model year. Do not assume your vehicle uses both together.
High performance or special trims may differ. Always verify by VIN and the tire label on the driver’s door jamb.
If your aftermarket wheel bore is larger than 67.0 mm, hub-centric rings are recommended to maintain vibration-free fitment.
How To Use The Wheel Interchange Calculator
The calculator lets you compare a donor wheel and tire to your CTS so you can check clearance, diameter change, and offset effects before you buy.
Step 1 - Set Installed on (your vehicle) to 2012 Cadillac CTS.
Step 2 - Choose Wheels from (donor vehicle). If you do not know the donor specs, enter them under Custom wheel size and Custom tire size.
Step 3 - Adjust Custom wheel size: set rim diameter, width, and offset. The tool will show inner and outer clearance changes vs your CTS.
Step 4 - Adjust Custom tire size: set section width and aspect ratio. When you change rim diameter, the calculator updates overall tire diameter in the comparison.
Step 5 - Review results: aim to keep overall tire diameter close to stock, watch for inner clearance near strut, spring perch, and brake caliper, and check poke relative to fender.
Step 6 - Use known values above as your starting point, then test your proposed sizes. If your trim differs, use your door-jamb tire size as the baseline instead.
General guidance only: many installers try to keep overall tire diameter within about 3 percent of stock and maintain offsets close to OEM to protect scrub radius and wheel bearing load. Always confirm physically.
Fitment Checklist Before You Buy
Bolt pattern - Wheel must be 5x120. Do not use 5x120.65 or any other pattern.
Center bore - Vehicle hub is 67.0 mm. Use hub-centric wheels or rings to 67.0 mm if the wheel bore is larger. Never use a wheel with a smaller bore than the hub.
Wheel fasteners - M14 x 1.5. Seat type must match the wheel design. Do not mix conical and ball seats.
Offset and backspacing - Compare your proposed ET to the OEM ET48 example using the calculator. Ensure inner clearance is safe and the outer edge does not strike the fender.
Brake clearance - Visually confirm spoke and barrel clearance over calipers and rotors. Some trims have larger brakes.
Tire diameter - Keep overall diameter near your OEM tire size to preserve speedometer accuracy and ABS behavior.
Load and speed ratings - Tires and wheels must meet or exceed OEM ratings shown on your door-jamb label.
TPMS - Plan for sensor transfer or compatible replacements and relearn procedure.
Thread engagement - Ensure nut engagement at least equal to the stud diameter. Do not use spacers or extended hardware without verifying safe engagement.
Return policy - Verify return terms for fitment issues before mounting tires.
Plus Sizing And Common Upgrades
Many owners explore plus sizing for appearance or performance. Because OEM equipment varies by trim in 2012, use your vehicle’s actual stock tire size from the door-jamb as the baseline, then model options in the calculator.
Plus 1 or Plus 2 - Increase wheel diameter while choosing a lower-profile tire to keep overall diameter close to stock. Example: if your label shows 235/55R17, try modeling 18-inch or 19-inch options that maintain similar overall height.
Width changes - On an 8.0-inch wheel, many tire models list recommended widths roughly in the 225 to 255 mm range. Check your tire’s official spec sheet for approved rim widths.
Offset tuning - Small changes in offset affect inner clearance and fender poke. Keep close to OEM ET and verify with the calculator.
Hub-centric fit - If aftermarket wheel bore is larger than 67.0 mm, use quality hub-centric rings sized to your wheel’s bore to prevent vibration.
Spacers - If used, choose hub-centric spacers with matching hub and wheel bores and ensure proper stud or bolt engagement. Recheck torque frequently.
Installation Tips
Support the vehicle - Use a floor jack and properly rated jack stands on solid ground. Refer to the owner’s manual for lift points.
Prepare the hub - Clean the hub face and centering lip. Remove rust and debris to ensure the wheel seats flush.
Dry threads - Install lug nuts dry unless the OEM service manual specifies otherwise. Do not use anti-seize on wheel studs.
Hand start - Thread all lug nuts by hand to avoid cross-threading. Confirm smooth engagement of M14 x 1.5 hardware.
Torque in a star pattern - Snug in stages, then torque to the OEM specification from the owner’s manual. Re-torque after 50 to 100 miles.
TPMS - Transfer sensors to new wheels or install compatible replacements. Perform the GM relearn procedure after installation.
Final checks - Spin each wheel by hand to confirm brake and suspension clearance before road testing.
What is the bolt pattern for the 2012 Cadillac CTS?
5x120. Match this exactly. Do not use 5x120.65 or adapters unless professionally engineered and verified.
My door-jamb shows 235/55R17 but I see an 18 x 8.0 wheel listed. Which is correct?
Both appear in 2012 across different packages. Use your door-jamb label and VIN to determine your vehicle’s exact factory size, then use that as the baseline in the calculator.
What is the center bore and do I need hub-centric rings?
The vehicle hub is 67.0 mm. If your wheel bore is larger, use hub-centric rings sized to 67.0 mm to help prevent vibration. If the wheel bore is smaller than 67.0 mm, it will not fit.
Which lug nuts should I use?
Use M14 x 1.5 nuts with the seat style required by your wheel, typically conical or ball. Seat style must match the wheel’s design. Reuse OEM nuts only if they match the new wheel seat.
Can I plus size to 18 or 19 inch wheels?
Yes, if overall tire diameter stays close to your OEM baseline and you maintain safe clearances. Model your sizes in the calculator and verify brake and fender clearance physically.
What tire widths fit an 8.0 inch wheel?
Many tire makers approve roughly 225 to 255 mm widths on an 8.0 inch rim, but it depends on the specific tire. Check the manufacturer’s spec sheet and confirm clearances on the car.
What is the lug nut torque spec?
This varies by model and trim and is not provided here. Use the value in your owner’s manual or OEM service information. Always torque with a calibrated wrench and re-torque after driving.
Will my TPMS work with new wheels?
Yes if you transfer compatible sensors or install correct replacements. Frequency and part number vary by application. After installation, complete the GM relearn procedure.
Are spacers safe?
Quality hub-centric spacers installed correctly can be safe, but they change geometry and hardware engagement. Use only if needed, confirm thread engagement equal to at least the stud diameter, and recheck torque.
How to confirm unknowns: check the driver’s door-jamb tire label, your owner’s manual, the OEM parts catalog by VIN, and model different scenarios in the Wheel Interchange calculator on wheelinterchange.com. If your trim or brake package differs, let the calculator use your actual baseline and compare before purchasing.
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.
