Recorded OEM specifications for the 2018 GMC Yukon, 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.
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 GMC Yukon. Overlap is not a guarantee that a specific wheel will install. Selected-wheel comparison is in the calculator below.
Evaluated 66 donor years. Listed 24 eligible overlaps (not all evaluated years are compatible). Showing all listed.
Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.
Approximate position vs the mid OEM package: outer change -1.67 mm, inner change -4.68 mm. This uses aggregated width/offset ranges, not a specific wheel.
Dataset suggestionHub-centric rings ≈ 78.3 → 78.1 mm – not a verified installation requirement.
Hub-centric rings of about 78.3 → 78.1 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.
Lug thread is not fully recorded for this comparison. Hardware must match the 2018 GMC Yukon studs and the selected wheel’s seat. Unknown hardware is not a match.
Bolt pattern data is incomplete for a full interchange decision.
Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.
Approximate position vs the mid OEM package: outer change -2.68 mm, inner change -3.68 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 GMC Yukon. 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 GMC Yukon
Example products matched to recorded thread, hub, or spacer dimensions. They are not verified fits. Confirm seat style, thickness, and clearance before ordering.
M14 x 1.5
M14 x 1.5 · Thread match only; seat style is not verified
View on Amazon →
M14 x 1.5 · Thread match only; seat style is not verified
View on Amazon →
M14 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 following wheel and tire specifications are the known OEM fitment values available for the 2018 GMC Yukon. Equipment can vary by trim, package, market, and replacement-wheel configuration, so confirm the specifications for your specific vehicle before purchasing.
| Specification | Known value |
|---|---|
| Bolt pattern | 6x139.7, six studs on a 139.7 mm pitch circle diameter |
| Center bore | 78.1 mm |
| Thread size | M14 x 1.5 |
| Rim diameter | 18 inches |
| Rim width | 8.5 inches |
| Wheel offset | ET24, or 24 mm |
| Backspacing | 5.19 inches |
| Tire size information | 265 mm section width, 65 percent aspect ratio, 18 inch rim diameter, commonly written as 265/65R18 |
These values describe the supplied fitment data and are not a guarantee that every 2018 Yukon trim uses the same wheel or tire package. Check the vehicle certification label, owner documentation, wheel markings, and the tire placard before ordering. The replacement wheel must also provide suitable load capacity and clearance for the brake assembly, suspension, steering components, and bodywork.
Use the calculator to compare a potential donor wheel and tire setup with the setup installed on your 2018 GMC Yukon. Enter the donor vehicle or donor wheel specifications in “Wheels from” and enter the Yukon specifications in “Installed on.” Use the known values above as a starting point, then verify them against your vehicle and wheel labels.
The calculator is a comparison tool, not a substitute for vehicle-specific service information. It cannot confirm load rating, brake clearance, TPMS compatibility, lug-seat style, tire load index, or legal requirements.
Plus sizing changes the wheel diameter while maintaining a similar overall tire diameter by using a lower-profile tire. This can alter steering response, ride comfort, wheel protection, braking clearance, speedometer behavior, and tire cost. No specific upgraded wheel or tire size is confirmed here because compatibility can vary by Yukon trim, brake package, wheel design, and tire selection.
When evaluating a larger or wider setup, enter the proposed rim diameter, rim width, and offset under “Custom wheel size,” then enter the proposed tire section width and aspect ratio under “Custom tire size.” Compare the result with the known 18 x 8.5 wheel, ET24, and 265/65R18 reference data. A mathematically similar diameter does not prove that a complete wheel and tire assembly will clear every component.
Changes to offset or width can move the wheel inward toward suspension parts or outward toward the fender. Wider tires can also increase the risk of rubbing during steering, suspension compression, or when the vehicle is heavily loaded. Confirm clearance at full steering lock and through the available suspension travel.
Useful supplies include a calibrated torque wrench, socket set, breaker bar, jack and appropriately rated jack stands, wheel chocks, a tire-pressure gauge, and a tread or clearance inspection tool. Always support the vehicle with jack stands on suitable points and never work under a vehicle supported only by a jack.
Shop automotive torque wrenches on Amazon
Shop digital tire-pressure gauges on Amazon
What is the bolt pattern for a 2018 GMC Yukon?
The supplied OEM fitment is 6x139.7. Confirm the specification for your exact trim and wheel package before ordering.
What is the center bore?
The known center bore is 78.1 mm. A replacement wheel with a smaller center bore will not fit over the hub. A larger bore may need properly sized hub-centric rings, depending on the wheel and application.
What wheel size is listed for this Yukon?
The supplied fitment data lists an 18 x 8.5 inch wheel with ET24 offset and 5.19 inches of backspacing. Trim and package differences should be checked against the vehicle and OEM documentation.
What tire size is associated with the supplied wheel data?
The supplied tire measurements are 265 mm section width, a 65 percent aspect ratio, and an 18 inch rim diameter, written as 265/65R18. Confirm the approved tire size and load requirements on the vehicle placard.
Can I use wheels from another vehicle?
Possibly, but vehicle origin alone does not establish compatibility. Compare bolt pattern, center bore, width, offset, backspacing, brake clearance, lug-seat design, load capacity, and tire requirements in the calculator. A physical inspection or test fit may still be necessary.
Can I install a wider wheel or tire?
A wider setup may fit, but no universal wider size is confirmed here. Use the custom wheel and tire fields to compare dimensions, then verify clearance at full steering lock, under compression, and with the vehicle loaded.
Does a larger wheel change tire diameter?
It can. The calculator updates tire diameter when the rim diameter is changed, but the selected tire must still have a suitable overall diameter, load index, speed rating, and clearance for the vehicle.
Do I need new TPMS sensors?
Not necessarily. Sensor compatibility depends on the replacement wheels, sensor type, and vehicle system. Confirm compatibility with the wheel supplier or a tire service professional, and check that the TPMS warning light is off after installation.
What torque should I use for the lug nuts?
Use the torque specification provided by GMC for your exact vehicle and wheel configuration. Do not rely on a generic value from an unrelated vehicle or wheel manufacturer. Tighten in a crisscross pattern with a calibrated torque wrench.
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.
