Recorded OEM specifications for the 1999 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.
Center-bore records disagree: year-level hub 78.1 mm vs trim range 78.3–78.3 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 1999 GMC Yukon. Overlap is not a guarantee that a specific wheel will install. Selected-wheel comparison is in the calculator below.
Evaluated 10 donor years. Listed 10 eligible overlaps (not all evaluated years are compatible). Showing all listed.
Lug thread is not fully recorded for this comparison. Hardware must match the 1999 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.
Recorded vehicle-side thread for the 1999 GMC Yukon 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 ≈ 100.3 → 78.3 mm – not a verified installation requirement.
Hub-centric rings of about 100.3 → 78.3 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. 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.
Recorded vehicle-side thread for the 1999 GMC Yukon 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 suggestionWheel spacer ≈ 6.68 mm – not a verified installation requirement.
Hub-centric rings of about 100.3 → 78.3 mm mm may be relevant if the wheel bore is larger than the hub. A spacer of about 6.68 mm is a dataset suggestion only; clearance is not verified. 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.
Only years with evidence-based interchange relationships are listed. Adjacent years are not assumed compatible.
Compare a donor vehicle or custom wheel against this 1999 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
1999 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 specifications are the known OEM fitment data provided for the 1999 GMC Yukon. Verify your specific vehicle and trim before ordering wheels, tires, lug nuts, or related parts.
| Specification | Known value |
|---|---|
| Bolt pattern | 6x139.7 |
| Center bore | 78.3 mm |
| Thread size | M14 x 1.5 |
| Rim diameter | 15 inches |
| Rim width | 7.0 inches |
| Wheel offset | ET31, or 31 mm |
| Backspacing | 4.72 inches |
| Known tire size | 235/75R15 |
| Tire section width | 235 mm |
| Tire aspect ratio | 75 |
| Tire rim diameter | 15 inches |
These values describe the supplied reference configuration. Equipment can vary by trim, drivetrain, suspension, brake package, replacement parts, and previous modifications. Confirm the original specifications with the vehicle owner’s manual, the vehicle information label, a GMC service source, or the markings on the wheels currently installed.
Use the wheel interchange calculator on this page to compare a donor vehicle’s wheels with the 1999 GMC Yukon. Enter the donor vehicle under Wheels from and set the Yukon as the vehicle under Installed on.
Plus sizing generally means fitting a larger-diameter wheel with a lower-aspect-ratio tire. The calculator can help compare custom rim diameter, rim width, offset, section width, and aspect ratio, but it does not make an unverified combination safe or approved.
Keep the replacement tire’s overall diameter reasonably close to the reference 235/75R15 size unless a qualified technician confirms the effects of a larger difference. Diameter changes can affect speedometer readings, ground clearance, gearing, braking behavior, steering feel, and electronic systems where equipped.
Wider wheels and tires may improve handling or appearance, but they can also increase the risk of rubbing and may require different offset, tire clearance, or fender inspection. The correct alternative sizes, trim-specific limits, and approved load ratings are not provided here. Confirm them with GMC documentation, the tire manufacturer, and the wheel manufacturer.
A torque wrench is important for tightening wheel fasteners to the correct specification. You can view suitable options on Amazon.
A wheel fitment inspection may also require a reliable tire pressure gauge, a jack and properly rated jack stands, and a socket that matches the selected lug nuts. Never work beneath a vehicle supported only by a jack. See automotive jack stands and wheel chocks for examples, and follow the equipment manufacturer’s safety instructions.
What is the bolt pattern for a 1999 GMC Yukon?
The known bolt pattern for this page is 6x139.7. Confirm the pattern on the wheel or through an OEM source before purchase, especially if the vehicle has modified hubs or replacement axles.
What is the center bore for the 1999 GMC Yukon?
The supplied center bore specification is 78.3 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 installation requirements.
What is the known stock wheel and tire size?
The supplied reference configuration is a 15x7.0 wheel with ET31 offset and a 235/75R15 tire. This is known reference data, not a guarantee that every trim or modified vehicle uses the same equipment.
What lug thread size does this Yukon use?
The supplied thread specification is M14 x 1.5. The lug-nut seat style and required torque are separate specifications and must be confirmed before installation.
Can I install wheels with the same 6x139.7 bolt pattern?
Not necessarily. The center bore, offset, width, brake clearance, load rating, lug-nut seat, and tire size must also be compatible. Use the calculator to compare the complete wheel dimensions, then perform a physical clearance inspection.
Can I use a larger wheel diameter?
A larger diameter may be possible with a suitable tire, but the correct size is not provided here. Use the custom wheel and tire controls to evaluate the change, then confirm overall diameter, load rating, brake clearance, steering clearance, and fender clearance with qualified sources.
How do I confirm whether a donor wheel will fit?
Enter the donor vehicle under Wheels from and the 1999 GMC Yukon under Installed on. Compare all available dimensions, including bolt pattern, center bore, width, diameter, and offset. Confirm the result against OEM or wheel-manufacturer information and inspect the actual wheel on the vehicle before final use.
Why does changing rim diameter change the calculator’s tire diameter?
The calculator updates the comparison because tire section width, aspect ratio, and rim diameter combine to determine overall tire diameter. Review the updated value whenever you change the rim diameter, and verify that the finished tire remains suitable for the vehicle.
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.
