OEM wheel and tire fitment specs for the 2017 Buick Regal, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.
Recorded OEM specifications for the 2017 Buick Regal, 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 2017 Buick Regal. Overlap is not a guarantee that a specific wheel will install. Selected-wheel comparison is in the calculator below.
Evaluated 19 donor years. Listed 19 eligible overlaps (not all evaluated years are compatible). Showing all listed.
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
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. Approximate position vs the mid OEM package: outer change 5.68 mm, inner change 0.67 mm. This uses aggregated width/offset ranges, not a specific wheel.
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
Recorded vehicle-side thread for the 2017 Buick Regal is M14x1.5. This donor year is recorded as 1/2"-20UNF. 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 (1/2"-20UNF 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. Approximate position vs the mid OEM package: outer change -3.02 mm, inner change -16.03 mm. This uses aggregated width/offset ranges, not a specific wheel.
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
Approximate position vs the mid OEM package: outer change 5.68 mm, inner change 0.67 mm. This uses aggregated width/offset ranges, not a specific wheel.
Check wheel configurationWheel bore may need hub-centric rings; clearance unverified
Bolt pattern5x115 · Same recorded PCD
Center bore70.3 mm donor vs hub 66.9 mm
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
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. Approximate position vs the mid OEM package: outer change 5.68 mm, inner change 0.67 mm. This uses aggregated width/offset ranges, not a specific wheel.
Buick Regal 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 2017 Buick Regal. 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:
2017 Buick Regal
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.
-
5x115
Center Bore
The hole in the center of the wheel that fits over the vehicle’s hub.
-
66.9 mm
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
The wheel diameter in inches that determines which tire sizes will fit.
-
18"
Rim Width
The distance between the inner edges of the wheel is measured in inches.
-
8.0"
Wheel Offset
How far the wheel sits inward or outward relative to the hub mounting surface.
-
42 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.
-
-
Compare Tires
Specification
Wheels from
Installed on
Result (Click it)
Section Width
The width of the tire from sidewall to sidewall, measured in millimeters.
-
-
Aspect Ratio
The height of the tire’s sidewall expressed as a percentage of its width.
-
-
Diameter
The wheel diameter for which the tire is designed to fit.
-
-
Tire Pressure
The recommended air pressure for safe and efficient driving.
-
-
Overall Diameter
The total height of the tire and wheel combined affects clearance and speedometer accuracy.
-
-
Wheel Fitment Parts for the 2017 Buick Regal
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.
tl;dr
2017 Buick Regal: bolt pattern 5x120, center bore 66.9 mm, thread M14 x 1.5, nominal OEM wheel 19x8.5 ET45. Tire information varies by trim. Use the on-page calculator to confirm alternate wheel and tire combos before buying. Gotchas: a listed tire rim diameter of 18 may indicate multiple OEM wheel options.
Recommendation
Follow a four‑step lifecycle when selecting and fitting wheels. Verify fitment, choose hardware, test‑fit, and finalize with torque and alignment. Use the on‑page calculator to compare donor wheels and custom sizes. If any OEM value varies by trim, confirm with the dealer or your VIN.
Verify bolt pattern and thread size: 5x120, M14 x 1.5. These must match or be adapted with appropriate studs/bolts.
Confirm center bore: 66.9 mm. Use hub‑centric rings if aftermarket wheels have a larger bore.
Respect offset: OEM ET 45 mm. Keep offset close to avoid handling changes and rubbing.
Match rim width: OEM 8.5 in. Wider or narrower rims need tire and clearance checks via the calculator.
Confirm tire fit: OEM tire shown 235/50R18 but OEM rim diameter also listed 19 in. Use the calculator or VIN lookup to resolve this discrepancy.
Buy correct lug nuts and a calibrated torque wrench for final installation.
Impact
Wheel choices affect handling, speedometer, and brake clearance. A lower offset moves the tire outward. Wider rims change tire profile and clearance. Different overall diameter alters speedometer and ABS calibration. Testing on the vehicle reveals real clearance and steering behavior.
OEM fitment value
Provided data
Bolt pattern
5x120
Center bore
66.9 mm
Thread size
M14 x 1.5
Rim diameter
19 in
Rim width
8.5 in
Offset (ET)
45 mm
Backspacing
6.02 in
Tire section width
235 mm
Tire aspect ratio
50%
Tire rim diameter (R)
18 (may vary by trim)
Use the calculator to model changes and see exact tire diameter and clearance effects before purchase. This resolves the rim/tire diameter mismatch quickly.
Risks
Be aware of common gotchas that cause returns or unsafe conditions.
Rubbing: Incorrect offset or too-wide rims can contact suspension or bodywork.
Hub mismatch: Wheels with a larger center bore require hub‑centric rings.
Lug fitment: Seat profile and thread engagement must match. Verify lug nut type.
TPMS and ABS: Different wheel/tire diameter can affect sensors and speed readings.
Load rating: Aftermarket wheels must meet or exceed vehicle load requirements. Check wheel specs.
Torque and safety: Under‑ or over‑torqued lug nuts risk wheel loss or warped rotors.
If any specification is unknown or differs by trim, confirm with the VIN, dealer parts department, or OEM service manual. The on‑page calculator helps validate size tradeoffs.
Next actions
Follow this compact checklist and next steps.
Use the on‑page calculator to compare donor wheels and custom sizes now.
Confirm rim diameter for your VIN. The 18 vs 19 discrepancy needs verification.
Measure hub bore and test the wheel on the hub before full installation.
Order hub‑centric rings if bore is larger than 66.9 mm, and correct lug nuts for M14x1.5.
Buy a quality torque wrench and torque to OEM spec when mounting wheels.
Post‑install: perform a low‑speed clearance test and then a professional alignment.
Quick tool links: torque wrench and hub‑centric rings help do the job safely.
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.
