2018 Buick Encore Wheel Interchange

2018 Buick Encore Wheel Fitment Guide

Known OEM Fitment For 2018 Buick Encore

The values below are verified inputs available for this model year. Some trims may use different wheel and tire sizes. If a value is not listed here, do not assume it. Confirm against your tire placard, the owner manual, or by using the calculator on this page.

Note: The presence of a 16 inch wheel size and a 215/55R18 tire size indicates that multiple factory configurations exist for the 2018 Encore. Your exact trim may differ. Always verify your stock size from the driver door jamb placard and cross-check with the calculator and OEM documentation before purchasing wheels or tires.

How To Use The Wheel Interchange Calculator

The calculator on wheelinterchange.com lets you compare a donor setup against your Encore and test custom sizes. Follow these steps:

• Start with your known specs. Enter the 2018 Buick Encore values above into the Installed on (your vehicle) side.
• Pick a comparison. In Wheels from (donor vehicle), choose a donor vehicle or manually enter the wheel and tire you want to test.
• Adjust Custom wheel size. Change rim diameter, width, and offset to preview inner and outer clearance changes relative to your Encore’s baseline.
• Adjust Custom tire size. Change section width and aspect ratio. When you change rim diameter, the tool updates overall tire diameter so you can keep it close to stock.
• Review the results. Check inner clearance to strut and brake, poke past the fender, and overall diameter change to see speedometer impact.
• Decide with data. Aim to keep overall tire diameter within about 3 percent of stock, maintain safe inner clearance, and keep offset within a sensible range to avoid rubbing.

Fitment Checklist Before You Buy

• Bolt pattern: Wheel must be 5x105. Adapters change geometry and require special consideration.
• Center bore: The Encore hub is 56.6 mm. If an aftermarket wheel has a larger bore, use hub-centric rings sized 56.6 mm to your wheel’s bore.
• Thread size and seat: Lugs must be M12 x 1.5 and match the wheel’s seat type. Do not mix cone, ball, or mag seats.
• Offset and backspacing: Known OEM offset is 38 mm with about 4.75 in backspacing on a 16x6.5 wheel. Deviations change inner clearance and fender poke. Validate with the calculator.
• Brake clearance: Visually confirm spoke and barrel clearance over calipers. Paper or clay gauge checks help when test-fitting.
• Overall diameter: Keep new tire diameter close to your stock size to protect ABS, AWD logic, and speedometer accuracy.
• Load rating: Wheels and tires must meet or exceed the Encore’s axle load requirements. Check sidewall and wheel documents.
• TPMS compatibility: Confirm sensor frequency and valve type. Some aftermarket wheels need different TPMS stems.
• Stud engagement: Ensure sufficient thread engagement on all lugs. Avoid using spacers without ensuring proper shank depth and hubcentric support.
• Fender and suspension travel: Check at full lock, full bump, and with passengers or cargo.

Plus Sizing And Common Upgrades

This model year was offered with different factory wheel and tire combinations. The known data shows a 16x6.5 ET38 wheel and a 215/55R18 tire example on some trims. If you plan to plus size:

• Move in small steps. Going from a 16 inch wheel to a 17 or 18 can work when overall tire diameter is kept close to stock using the calculator.
• Mind the offset. Wider wheels often need a modest offset adjustment to maintain inner clearance without pushing the tire too far outward.
• Check brake clearance. Larger-diameter wheels may clear brakes more easily but spoke design can still interfere.
• Validate with the tool. Enter your current tire placard size and test candidates. The calculator shows inner clearance change and fender poke so you can avoid rubbing.

Installation Tips

• Test-fit first. Mount one wheel without the tire to verify hub fit, offset clearance, and caliper clearance.
• Clean the hub. Remove rust from the hub face and center pilot for perfect mounting. A thin, even film of anti-seize on the hub pilot can help prevent future sticking. Keep friction faces dry.
• Use hub-centric rings when needed. If wheel bore is larger than 56.6 mm, install proper rings so the wheel centers on the hub.
• Lug torque: Tighten lugs by hand first, then torque in a star pattern to the factory specification from your owner manual or service information. Re-torque after 50 to 100 miles.
• TPMS: Swap or program sensors compatible with your Encore. Perform a relearn procedure as required.
• Avoid impact gun for starting threads. Start lugs by hand to prevent cross-threading, then finish with a torque wrench.

Tools And Helpful Supplies

• 1/2 inch drive torque wrench Shop options
• GM TPMS relearn tool Shop options
• Wheel hub cleaning brush Shop options
• M12 x 1.5 lug nuts, correct seat type for your wheels Shop options

FAQs

• Will wheels with a 5x110 bolt pattern fit my 2018 Encore?

  No. The known bolt pattern is 5x105. Do not force-fit mismatched patterns.

• Is 56.6 mm the only hub bore used on this vehicle?

  56.6 mm is the known hub pilot for the Encore. If an aftermarket wheel has a larger bore, use hub-centric rings sized to 56.6 mm inner and your wheel’s bore outer.

• What offset should I use with wider wheels?

  The known OEM offset is 38 mm on a 16x6.5 wheel. For other widths, use the calculator to compare inner clearance and outer poke against this baseline and verify with physical measurements before purchase.

• Can I run 215/55R18 tires?

  215/55R18 appears on some trims for this model year. Confirm your placard tire size and verify overall diameter and clearance in the calculator to ensure it matches your trim and brakes.

• Do I need new lug nuts for aftermarket wheels?

  Possibly. Match thread size M12 x 1.5 and the correct seat type required by the new wheels. Many aftermarket wheels use 60 degree conical seats, but confirm with the wheel documentation.

• How close should my new tire diameter be to stock?

  Keep overall diameter as close as practical to stock to protect ABS and speedometer accuracy. The calculator will show the percent difference to help you decide.

• Will 16 inch wheels clear my brakes?

  Some trims use 16 inch wheels, but brake packages can vary. Always test-fit or measure caliper-to-barrel clearance before committing.