Recorded OEM specifications for the 2018 Buick LaCrosse, donor years with overlapping ranges, and a calculator to compare a selected wheel. Range overlap is not a guaranteed fit.
Baseline mounting dimensions used for interchange decisions.
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 67.1 mm vs trim range 70.3–70.3 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.
These are vehicle-year records whose recorded OEM ranges overlap this 2018 Buick LaCrosse. Overlap is not a guarantee that a specific wheel will install. Selected-wheel comparison is in the calculator below.
Evaluated 15 donor years. Listed 15 eligible overlaps (not all evaluated years are compatible). Showing all listed.
Dataset suggestionWheel spacer ≈ 10.18 mm – not a verified installation requirement.
A spacer of about 10.18 mm is a dataset suggestion only; clearance is not verified. Estimated outer position is about 10.18 mm farther inward than the mid OEM package.
Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.
Dataset suggestionWheel spacer ≈ 12.18 mm – not a verified installation requirement.
A spacer of about 12.18 mm is a dataset suggestion only; clearance is not verified. Estimated outer position is about 12.18 mm farther inward than the mid OEM package.
Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.
Center-bore records disagree (target year-level hub 67.1 mm vs trim range 70.3–70.3 mm). Unqualified overlap is not claimed until the conflict is resolved. Approximate position vs the mid OEM package: outer change -2.18 mm, inner change -4.18 mm. This uses aggregated width/offset ranges, not a specific wheel.
Recorded vehicle-side thread for the 2018 Buick LaCrosse is M12x1.5. This donor year is recorded as M14x1.5. 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.
Center-bore records disagree (target year-level hub 67.1 mm vs trim range 70.3–70.3 mm). Unqualified overlap is not claimed until the conflict is resolved. Recorded vehicle-side thread differs (M14x1.5 on the donor year vs M12x1.5 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 4.18 mm, inner change 2.18 mm. This uses aggregated width/offset ranges, not a specific wheel.
Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.
Recorded vehicle-side thread for the 2018 Buick LaCrosse is M12x1.5. This donor year is recorded as M14x1.5. 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.
Center-bore records disagree (target year-level hub 67.1 mm vs trim range 70.3–70.3 mm). Unqualified overlap is not claimed until the conflict is resolved. Recorded vehicle-side thread differs (M14x1.5 on the donor year vs M12x1.5 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 3.18 mm, inner change 3.18 mm. This uses aggregated width/offset ranges, not a specific wheel.
Only years with evidence-based interchange relationships are listed. Adjacent years are not assumed compatible.
Compare a donor vehicle or custom wheel against this 2018 Buick LaCrosse. Use Compare in calculator on a donor row above to fill the donor side of this same calculator.
Compare wheel compatibility between two vehicles
2018 Buick LaCrosse
Example products matched to recorded thread, hub, or spacer dimensions. They are not verified fits. Confirm seat style, thickness, and clearance before ordering.
M12 x 1.5
M12 x 1.5 · Thread match only; seat style is not verified
View on Amazon →
M12 x 1.5 · Thread match only; seat style is not verified
View on Amazon →
M12 x 1.5 · Thread match only; seat style is not verified
View on Amazon →As an Amazon Associate we earn from qualifying purchases. Product availability and pricing may change.
The values below are the known specifications for at least one factory wheel and tire package on the 2018 Buick LaCrosse. Trims and option packages can vary. If anything on your vehicle differs from what you see here, confirm against your door-jamb tire placard, your owner’s manual, and the on-page calculator before buying parts.
| Bolt pattern | 5x120 |
| Center bore | 67.1 mm |
| Thread size | M14 x 1.5 |
| Rim diameter | 19 in |
| Rim width | 8.5 in |
| Wheel offset | ET 40 mm |
| Backspacing | 5.82 in |
| Tire size example | 235/50R18 |
Note: The wheel size shown above is 19x8.5 while the tire size shown is 235/50R18. That mix suggests the data may represent more than one factory configuration. Your car may have come with 18 inch or 19 inch wheels depending on trim. Verify your exact original equipment sizes with the vehicle placard and OEM resources, then use the calculator to model any changes.
Plus sizing changes wheel diameter and tire aspect ratio to keep overall tire diameter close to stock. This can improve appearance and handling if done correctly. Exact fitment depends on your trim, brakes, and suspension, which are not fully specified here, so always verify with the calculator and a physical clearance check.
What is the bolt pattern on the 2018 Buick LaCrosse?
5x120. This must match exactly on any replacement wheel.
What center bore do I need?
67.1 mm at the hub. If an aftermarket wheel has a larger bore, use hub-centric rings to step down to 67.1 mm.
What lug thread does it use and what lug nuts should I buy?
M14 x 1.5 threads. The correct lug nut seat style depends on the wheel design and is not provided here. Verify with the wheel manufacturer or inspect your current lugs before purchasing.
Will 5x115 or 5x114.3 wheels fit my LaCrosse?
No. Wheels with 5x115, 5x114.3, or 5x120.65 are not correct for a 5x120 hub and should not be used.
What offset should I choose?
The known OEM reference is ET 40 mm. The ideal offset for your setup depends on wheel width and brake clearance. Use the calculator to compare to the OEM baseline and measure clearances on the vehicle.
What is the factory torque spec for the lug nuts?
The exact torque can vary by trim and wheel. Check your owner’s manual or OEM service information and tighten with a calibrated torque wrench.
Will 20 inch wheels fit?
Fitment depends on offset, width, tire size, and brake clearance which vary by trim. Model a 20 inch setup in the calculator, then confirm physically on the car before buying.
Do I need to reprogram TPMS if I change wheels or tires?
Yes. After rotating sensors or installing new ones, perform a relearn per the Buick procedure or with a compatible GM TPMS relearn tool.
Important: If any specification for your specific 2018 Buick LaCrosse is unknown or differs from the values above, use the on-page calculator with your OEM placard data and consult OEM parts catalogs or a Buick dealer by VIN to confirm before purchasing wheels or tires.
Wheel interchange depends on more than bolt pattern. Where data is available, this site compares recorded OEM values:
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.
