2017 GMC Terrain Wheel Fitment Guide
Known OEM Fitment For 2017 GMC Terrain
The following specifications are the known OEM fitment values supplied for the 2017 GMC Terrain. They may not cover every trim, package, wheel option, or market configuration. Confirm the exact specifications for your vehicle with the owner’s manual, the vehicle certification label, the original wheel markings, or a GMC dealer before purchasing wheels or tires.
| Specification |
Known value |
| Bolt pattern |
5x120 |
| Center bore |
66.9 mm |
| Thread size |
M14 x 1.5 |
| Rim diameter |
18 inches |
| Rim width |
7.0 inches |
| Wheel offset |
ET46 |
| Backspacing |
5.31 inches |
| Tire size data |
235 section width, 55 aspect ratio, R18 rim diameter |
In tire-size form, the supplied tire data corresponds to 235/55R18. Treat this as known reference data for the calculator, not as proof that every 2017 GMC Terrain trim uses the same wheel and tire package. The calculator can help compare dimensions, but it does not replace load-rating, brake-clearance, tire-pressure, or OEM verification.
How To Use The Wheel Interchange Calculator
Use the calculator to compare a donor wheel and tire setup with your 2017 GMC Terrain. Enter the donor vehicle or wheel information under “Wheels from,” then enter the Terrain information under “Installed on.” Compare bolt pattern, center bore, wheel diameter, wheel width, offset, backspacing, and tire dimensions.
You can also select “Custom wheel size” to enter a proposed rim diameter, rim width, and offset. Use “Custom tire size” to enter section width and aspect ratio. When rim diameter changes, the calculator updates the tire diameter in the comparison, helping you review overall diameter and related fitment changes.
Use the calculator as a screening tool. A result that appears dimensionally close does not confirm safe installation. Physically verify hub seating, stud and lug-nut engagement, brake clearance, suspension clearance, fender clearance, tire load capacity, and the correct tire-pressure-monitoring equipment before driving.
Fitment Checklist Before You Buy
First, confirm the vehicle’s exact trim and original wheel package. The provided data may be partial, and specifications can vary by trim or equipment. Check OEM documentation and the markings cast or stamped into the wheel.
Confirm that the replacement wheel uses the 5x120 bolt pattern and has a center bore that is compatible with the vehicle hub. A larger wheel center bore may require properly sized hub-centric rings, while a smaller bore will not fit over the hub. Do not use rings to correct an incorrect bolt pattern or an unsafe offset.
Check that the replacement wheel is designed for M14 x 1.5 wheel hardware and that the lug-seat style matches the wheel. Do not assume the original lug nuts are compatible with an aftermarket wheel. Verify the wheel manufacturer’s required hardware and tightening specification.
Compare offset and backspacing, not only diameter and width. A change can move the inner rim closer to the strut, spring, brake components, or suspension arms, or move the outer rim and tire closer to the fender. Check clearance with the steering turned fully left and right and with the suspension loaded.
Verify the tire load index, speed rating, overall diameter, section width, and approved rim-width range. The replacement tire must meet or exceed the vehicle manufacturer’s requirements. Never select a tire solely because its outside diameter appears similar.
Plus Sizing And Common Upgrades
Plus sizing changes the wheel diameter while maintaining a similar overall tire diameter by reducing the tire sidewall height. This can change ride comfort, handling response, wheel protection, tire cost, and the risk of rim damage. The calculator can compare custom rim and tire sizes, but the final tire size must also be approved for the wheel width and vehicle application.
Moving to a wider wheel or tire can create clearance problems even when the overall diameter is close. Review inner clearance, outer fender clearance, steering clearance, and suspension travel. A different offset can be just as important as a different width.
Do not assume that a larger diameter wheel clears the brakes. Brake-caliper clearance depends on the wheel’s internal spoke and barrel design, not just the stated wheel diameter. Request a manufacturer brake-clearance confirmation or test-fit carefully before mounting tires.
Any change in tire size can affect the speedometer, odometer, vehicle-control systems, spare-tire compatibility, and tire-pressure monitoring. Confirm whether recalibration or sensor servicing is required using GMC service information and the tire or wheel manufacturer’s instructions.
Installation Tips
Inspect each wheel for cracks, bends, corrosion, damaged lug holes, and missing hardware before installation. Clean the hub and wheel mounting surfaces so the wheel seats flush. Do not place spacers, washers, paint, or debris between the wheel and hub unless a qualified manufacturer-approved system specifically requires it.
Install the correct lug nuts by hand first to prevent cross-threading. Tighten them in a star or crisscross pattern using a calibrated torque wrench and the vehicle or wheel manufacturer’s specified torque. The correct torque value was not provided here, so confirm it in the owner’s manual, GMC service information, or the wheel manufacturer’s instructions.
After installation, rotate the steering from lock to lock and inspect for contact. Check clearance between the wheel, tire, strut, brake assembly, suspension, and fender. Lower the vehicle, recheck tire pressure, and confirm that the tire-pressure warning system operates correctly.
Recheck lug-nut torque after the initial driving period specified by the wheel manufacturer, and inspect for contact or looseness. Stop driving if you notice vibration, rubbing, steering changes, air loss, or unusual noise.
Tools And Helpful Supplies
A torque wrench, correctly sized socket, jack, jack stands, wheel chocks, tire-pressure gauge, and a tread or clearance inspection light are useful for a safe installation. Use jack stands on a solid, level surface and follow the vehicle manufacturer’s lifting points. Never work under a vehicle supported only by a jack.
For a suitable torque-wrench search, see automotive torque wrenches on Amazon. For pressure verification, see digital tire-pressure gauges on Amazon. Match any tool or accessory to the wheel manufacturer’s instructions and the vehicle’s requirements.
FAQs
What is the bolt pattern for the 2017 GMC Terrain?
The supplied OEM fitment data lists a 5x120 bolt pattern. Confirm this against the original wheel or OEM documentation for your specific trim before ordering.
What is the center bore?
The supplied center-bore value is 66.9 mm. A replacement wheel with a smaller center bore will not fit over the hub. A larger bore may need correctly sized hub-centric rings, depending on the wheel design and manufacturer instructions.
What wheel size is listed in the supplied fitment data?
The supplied reference is an 18-inch diameter wheel measuring 7.0 inches wide, with ET46 offset and 5.31 inches of backspacing. These values may not represent every trim or factory wheel option.
What tire size corresponds to the supplied tire data?
The supplied values are 235 mm section width, 55 percent aspect ratio, and an 18-inch rim diameter, commonly written as 235/55R18. Confirm the approved tire size, load index, speed rating, and inflation pressure for your exact vehicle.
Can I install wheels from another vehicle with a 5x120 pattern?
Not automatically. The donor wheel must also be checked for center bore, offset, width, backspacing, lug-seat design, hardware compatibility, brake clearance, load rating, and tire compatibility. Use the calculator for comparison, then verify the result with the wheel manufacturer and OEM sources.
Is a larger center bore safe?
It can be acceptable when the wheel is correctly secured by the lug hardware and the manufacturer permits the application, but the hub and wheel must remain properly centered. Correctly sized hub-centric rings may be required. A ring cannot correct an incorrect bolt pattern, offset, or wheel load rating.
Do I need new lug nuts?
Possibly. Aftermarket wheels may use a different lug-seat shape, thread engagement requirement, or nut profile. The supplied vehicle thread size is M14 x 1.5, but thread size alone does not confirm lug-nut compatibility. Follow the wheel manufacturer’s hardware specification.
Will changing wheel size affect the speedometer?
It can. Changing the tire’s overall diameter changes the distance traveled per revolution and may affect speedometer and odometer readings. Compare the calculated diameter and confirm the final size with GMC service information or a qualified tire professional.
