2018 Ford Expedition Wheel Fitment Guide
Use this guide and the on-page wheel interchange calculator to compare wheel dimensions for a 2018 Ford Expedition. The specifications below are the known OEM fitment data provided for this page. Always confirm the exact requirements for your trim, brake package, tire, and replacement wheel with Ford documentation and the wheel manufacturer before purchasing.
Known OEM Fitment For 2018 Ford Expedition
| Specification |
Known value |
| Bolt pattern |
6x135 |
| Center bore |
87.1 mm |
| Thread size |
M14 x 2.00 |
| Rim diameter |
18 inches |
| Rim width |
8.5 inches |
| Wheel offset |
ET44, or 44 mm |
| Backspacing |
5.98 inches |
| Tire size data |
275/65R18 |
The bolt pattern means the wheel has six lug holes on a 135 mm pitch-circle diameter. A replacement wheel must match the 6x135 pattern. The center bore should be compatible with the Expedition hub. A wheel with a larger bore may require properly sized hub-centric rings, if approved by the wheel manufacturer. A wheel with a smaller bore will not fit over the hub.
These values do not confirm every trim-level or brake-clearance requirement. Do not treat the table as a complete compatible-vehicle list or as a substitute for the vehicle placard, owner information, Ford service data, and the replacement wheel manufacturer's specifications.
How To Use The Wheel Interchange Calculator
Start with the vehicle or wheel listed under Wheels from donor vehicle. Then select the 2018 Ford Expedition, or enter the known wheel and tire dimensions manually if the donor information is unavailable.
- Use Installed on your vehicle for the 2018 Ford Expedition and compare the donor wheel against the known 6x135 bolt pattern, 87.1 mm center bore, 18x8.5 wheel size, and ET44 offset.
- Review diameter, width, offset, backspacing, bolt pattern, and center-bore differences rather than relying on the vehicle name alone.
- Use Custom wheel size to test a different rim diameter, rim width, or offset.
- Use Custom tire size to compare section width and aspect ratio changes.
- When you change the rim diameter, review the updated tire diameter in the comparison. A different wheel diameter normally requires a tire with a suitable matching rim diameter.
The calculator is a comparison aid, not a physical clearance test. A result that appears dimensionally close can still fail because of brake calipers, suspension components, fender clearance, hub shape, lug-seat design, tire load rating, or manufacturer restrictions.
Fitment Checklist Before You Buy
- Confirm the 6x135 bolt pattern.
- Confirm that the wheel's center bore is compatible with the 87.1 mm hub specification.
- Compare the proposed rim diameter, width, offset, and backspacing with the known 18x8.5 ET44 setup.
- Verify brake-caliper and suspension clearance using the wheel manufacturer's application data or a physical test fit.
- Confirm the wheel's lug-seat type and use compatible M14 x 2.00 hardware where required. Do not assume the original lug nuts fit an aftermarket wheel.
- Check the tire's load index, speed rating, overall diameter, and approved rim-width range.
- Make sure the tire does not contact the strut, control arm, inner liner, fender, or other components through the full steering and suspension travel.
- Confirm that the replacement wheel is approved for the vehicle's weight and intended use.
Trim-specific brake and suspension details are not provided here. Confirm them through Ford OEM service information, the vehicle identification number, the driver's-door tire label, and the wheel manufacturer's fitment guide.
Plus Sizing And Common Upgrades
Plus sizing usually means installing a larger-diameter wheel with a lower-profile tire while attempting to keep the tire's overall diameter close to the original. This can change ride comfort, steering response, road-noise levels, wheel damage risk, and speedometer behavior.
The calculator lets you test custom rim diameter, rim width, and offset, along with tire section width and aspect ratio. Use those results to identify dimensional changes, but do not assume that a calculated match proves brake or body clearance. The exact tire model also matters because two tires with the same labeled size can have different measured section widths and clearances.
Do not select a replacement tire solely by matching the 275/65R18 size. Confirm the tire's load capacity, speed rating, approved wheel width, winter or all-season suitability, and manufacturer recommendations for the Expedition. If the new wheel or tire changes the overall diameter substantially, ask a qualified technician whether calibration or vehicle-system checks are needed.
Installation Tips
- Inspect the hub face, wheel mounting surface, studs, and lug nuts before installation. Remove rust and debris without damaging the mating surfaces.
- Test-fit one wheel on the front and rear before mounting all four. Check inner clearance and make sure the wheel fully seats against the hub.
- Install the correct lug nuts for the wheel's seat design and thread requirements. Do not force incompatible hardware.
- Start all lug nuts by hand, then tighten them in a crisscross pattern.
- Use the vehicle or wheel manufacturer's specified torque value. The correct torque specification is not provided here, so confirm it in the owner's manual, Ford service information, or the wheel manufacturer's instructions.
- After lowering the vehicle, recheck torque with a calibrated torque wrench.
- Turn the steering from lock to lock and inspect for contact. Also check clearance with the suspension loaded and after a short, cautious drive.
- Recheck lug-nut torque after the interval specified by Ford or the wheel manufacturer, especially after new wheels are installed.
Tools And Helpful Supplies
A calibrated torque wrench, properly sized socket, jack and jack stands rated for the vehicle, wheel chocks, and a tire-pressure gauge are useful for a careful installation. A tread or clearance gauge can help document tire-to-component space, but it does not replace a professional inspection.
Shop digital torque wrenches on Amazon and shop wheel lug-nut socket sets on Amazon. Verify socket size, torque range, and hardware compatibility before ordering.
FAQs
What is the bolt pattern for a 2018 Ford Expedition?
The known bolt pattern is 6x135. Confirm that any replacement wheel is manufactured for this exact pattern.
What is the center bore for the 2018 Ford Expedition?
The known center-bore specification is 87.1 mm. A larger wheel bore may need an appropriately sized hub-centric ring if the wheel manufacturer permits it. A smaller bore generally will not clear the hub.
What wheel size is listed for this 2018 Ford Expedition fitment?
The known wheel size is 18x8.5 with an ET44 offset and 5.98-inch backspacing. These values should be verified against the specific vehicle and replacement wheel application.
What tire size is listed with this fitment?
The provided tire data is 275/65R18. Tire load rating, speed rating, brand, and exact measured dimensions are not provided and must be checked before installation.
Can I use a wheel with a different offset?
A different offset changes the wheel's position relative to the suspension and fender. Use the custom wheel settings in the calculator to compare the change, then verify inner and outer clearance with the wheel manufacturer or a qualified technician. A calculator result alone does not confirm safe fitment.
Can I install a larger wheel diameter?
Possibly, but the correct tire must match the new rim diameter and maintain suitable load capacity and clearance. Enter the proposed diameter and tire dimensions in the calculator, then confirm brake clearance, overall diameter, tire clearance, and vehicle-specific approval before buying.
Do aftermarket wheels use the original lug nuts?
Not always. Lug-nut compatibility depends on thread size, seat shape, shank design, and wheel construction. The known thread size is M14 x 2.00, but the correct lug-seat type must be confirmed from the wheel manufacturer and hardware documentation.
Does the calculator prove that a wheel will fit?
No. It compares listed dimensions and custom inputs. It cannot physically verify caliper clearance, suspension travel, fender contact, hub engagement, tire variation, or lug-seat compatibility. Complete the comparison with OEM sources, manufacturer fitment data, and a careful test fit.
