2014 Buick Regal Wheel Interchange

2014 Buick Regal Wheel Fitment Guide | wheelinterchange.com

Known OEM Fitment For 2014 Buick Regal

The values below reflect information available for certain factory packages on the 2014 Buick Regal. Some trims and option packages may differ. If anything on your car does not match, confirm it against the tire placard in the driver’s door jamb, your owner’s manual, and the on-page calculator before purchasing wheels or tires.

Note: The wheel example and tire example may come from different factory packages. Your specific Regal may have different factory wheel and tire sizes. Always match to your own vehicle’s placard and use the calculator to compare clearances.

How To Use The Wheel Interchange Calculator

The calculator lets you compare a potential donor wheel and tire to your 2014 Buick Regal and see how inner clearance, outer poke, and overall tire diameter change.

• Set Installed on (your vehicle) to 2014 Buick Regal. Enter your current wheel and tire sizes from the tire sidewall and the rim markings if known. If your size differs from the examples above, use what is on your car.
• In Wheels from (donor vehicle), enter the wheel and tire you want to try. If you do not know the vehicle, use Custom wheel size and Custom tire size to test dimensions directly.
• Adjust rim width and offset to see inner clearance to the strut and outer fender poke change. Increasing width or decreasing offset pushes the wheel outward. Increasing offset pulls it inward.
• Change rim diameter and tire aspect ratio to keep overall tire diameter close to stock. The calculator updates the tire diameter when you change rim diameter so you can keep speedometer error minimal.
• Confirm bolt pattern and center bore separately. The calculator compares sizes, but a 5x120 bolt pattern and 66.9 mm hub bore match are required for direct fit without adapters.
• Brake caliper and spoke clearance is wheel-design dependent. Use the calculator for barrel clearance estimates, then physically test fit or use a brake template from the wheel maker when possible.

Fitment Checklist Before You Buy

Work through this list to avoid vibration, rubbing, or unsafe hardware engagement.

• Bolt pattern must be exactly 5x120. Other 5-lug patterns like 5x114.3 are not compatible without adapters.
• Center bore must be 66.9 mm or larger. If larger, use hub-centric rings to 66.9 mm. If smaller, the wheel will not seat.
• Thread size is M14 x 1.5. Match lug hardware to both the vehicle thread and the wheel’s seat style. Do not mix conical, ball, or mag seats.
• Offset and width: Use the calculator to keep inner clearance to struts and outer clearance to fenders close to stock. The OEM example is 8.5 inch width at ET 45. Significant changes can affect handling and bearing loads.
• Backspacing: Compare against the OEM example backspacing of 6.02 in for the 19 x 8.5 ET 45 wheel to understand inner position changes.
• Tire overall diameter: Many installers aim to keep overall tire diameter within a small percentage of stock to limit speedometer error and avoid rubbing. Use the calculator and verify under full steering lock and suspension compression.
• Brake clearance: Some trims may have larger front brakes. Always check barrel and spoke clearance with a test fit.
• Load rating: Wheels and tires must meet or exceed the vehicle’s GAWR. Check the load index on the tire and the wheel load rating from the manufacturer.
• TPMS: Plan for sensor transfer or new programmable sensors and a relearn procedure per Buick service information.

Plus Sizing And Common Upgrades

If your Regal is equipped with a factory 18 inch tire such as 235/50R18, a typical approach is to move to a 19 inch wheel and select a tire with a lower aspect ratio so overall diameter stays similar. Examples often evaluated for diameter math only include sizes like 235/45R19 or 245/40R19. These are not guaranteed fits for every trim or wheel width. Always:

• Use the calculator to compare inner and outer clearance against your current setup.
• Verify the tire’s approved rim width range with the tire manufacturer.
• Test fit to confirm brake, spoke, and fender clearance at full lock and over bumps.
• Consult your door-jamb placard and OEM sources for your exact tire and wheel specs by VIN.

Minus sizing for winter may be possible on some trims if brake clearance allows. Wheel diameter must clear the brakes. Measure or use manufacturer templates before purchasing smaller-diameter wheels.

Installation Tips

• Test fit one wheel without a tire first if possible. Hand-rotate to check spoke and caliper clearance, then compress the suspension or cycle steering to check for contact points.
• Clean the hub face and the wheel mounting pad. Remove rust and debris so the wheel seats flush. Lightly clean the center bore area before installing hub-centric rings if used.
• Install lug nuts by hand to avoid cross-threading. Use the correct seat style for your wheel.
• Tighten in a star pattern with a torque wrench to the factory torque specification from your owner’s manual or OEM service information. Re-torque after 50 to 100 miles.
• If using spacers, choose hub-centric spacers with matching 66.9 mm hub bore and ensure proper thread engagement with longer hardware as required. Follow torque procedures carefully.
• Complete the TPMS relearn procedure if sensors were moved or replaced.

Tools And Helpful Supplies

• 1/2 inch drive torque wrench: Search on Amazon
• M14 x 1.5 lug nuts or bolts matched to your wheel seat style: Search on Amazon
• Hub-centric rings to 66.9 mm when using wheels with larger center bores: Search on Amazon
• Tire tread depth gauge for checking wear before reuse: Search on Amazon

FAQs

• What is the 2014 Buick Regal bolt pattern?

  5x120 based on available OEM data. Confirm on your car before ordering by checking the service manual or a reputable parts catalog.

• What center bore does the Regal use?

  66.9 mm. Wheels with larger bores can be used with 66.9 mm hub-centric rings. Smaller bores will not fit.

• What lug nut thread size is required?

  M14 x 1.5 according to available OEM information. Always match the wheel’s seat style and verify thread size on your studs or bolts.

• Will 5x114.3 wheels fit my 5x120 hub?

  No. The bolt pattern must match exactly. Adapters exist but change offset and add complexity. If you consider adapters, model them in the calculator and verify hardware engagement and hub-centricity.

• What offset should I choose for aftermarket wheels?

  Offset depends on wheel width and brake clearance. Use the OEM reference of 8.5 inch width at ET 45 as a starting point in the calculator, then adjust to keep inner and outer positions close to stock and ensure brake clearance.

• Can I upgrade from an 18 inch tire to a 19 inch wheel?

  Often possible if brake and fender clearance are maintained. Use the calculator to select a tire with similar overall diameter and verify clearances. Check your trim’s brake size because some packages may reduce barrel clearance.

• What is the backspacing of the OEM 19 inch wheel example?

  6.02 inches for the listed 19 x 8.5 ET 45 example. Use this to compare inner position when modeling alternatives.

• Do I need new TPMS sensors?

  If reusing your original sensors and they are compatible with the new wheels, you can transfer them. If replacing, use compatible sensors and perform the Buick relearn procedure per OEM instructions.

• What torque should I use on the lug nuts?

  Follow the factory specification in the owner’s manual or OEM service literature for your exact trim. Use a calibrated torque wrench and re-torque after initial miles.

• How do I confirm my exact factory sizes?

  Check the tire and loading placard on the driver’s door jamb, your owner’s manual, and parts catalogs by VIN. Then enter those values into the calculator to compare against any new setup.