2020 Chevrolet Impala Wheel Interchange

2020 Chevrolet Impala Wheel Fitment And Interchange Guide | wheelinterchange.com

Known OEM Fitment For 2020 Chevrolet Impala

The values below reflect the fitment details provided for this page. If anything is missing or appears to conflict, use the on-page calculator and confirm against OEM sources before purchasing wheels or tires.

Data note: The listed wheel diameter is 20 inches, while the tire size shows a 19 inch rim (R19). That is inconsistent, which often happens when multiple trims or sources are combined. In addition, an 8.5 inch wheel with ET 45 typically yields backspacing around 6.5 inches, not 6.02. Treat these entries as partial and verify the exact factory size for your specific VIN or trim before ordering.

How to confirm OEM size quickly: check the Tire and Loading label on the driver door jamb for tire size and pressure, inspect the current wheel for size and offset castings on the back, look up your VIN in an OEM parts catalog, or consult a dealer service department. Then use the calculator on this page to compare any potential wheel or tire to your verified baseline.

How To Use The Wheel Interchange Calculator

The calculator lets you compare a donor wheel setup against your Impala so you can predict clearance, stance, and speedometer changes before you buy.

• Step 1 - Set Installed on (your vehicle) to 2020 Chevrolet Impala. Enter your verified OEM wheel and tire size from the door label or your current set.
• Step 2 - Set Wheels from (donor vehicle) to any vehicle or enter a Custom wheel size. Adjust rim diameter, rim width, and offset to match the candidate wheels you are considering.
• Step 3 - Enter Custom tire size to see overall tire diameter change. The tool updates total tire diameter automatically when you change rim diameter so you can aim to keep overall diameter similar.
• Step 4 - Review inner clearance to suspension, outer poke relative to fenders, and any speedometer variance. Aim to keep overall tire diameter within about plus or minus 3 percent of your verified stock value for street use.
• Step 5 - Save or print the comparison and confirm critical items manually: bolt pattern 5x120, center bore 66.9 mm, and thread size M14x1.5.

Fitment Checklist Before You Buy

Go through this list for each wheel and tire you consider. This prevents vibration, rubbing, and unsafe hardware engagement.

• Bolt pattern must match 5x120. Do not rely on forcing 5x120.65 or 5x114.3 with wobble hardware.
• Center bore on the wheel must be 66.9 mm or larger. If larger, use quality hub-centric rings sized to 66.9 mm inner. If equal, it is hub-centric by design.
• Thread size is M14x1.5. Use the correct lug nuts for your wheel’s seat type. Do not assume the seat type; verify with the wheel manufacturer.
• Offset and backspacing must clear brakes and suspension. Compare inner clearance and outer poke in the calculator and physically test-fit when possible.
• Overall tire diameter should be within about 3 percent of stock to avoid ABS, TC, and speedometer issues.
• Load rating of wheels and tires must meet or exceed vehicle requirements. Check wheel load rating and tire load index against the car’s axle weights.
• Brake caliper and spoke clearance must be verified. Use templates from the wheel maker or test-fit with feeler gauges.
• TPMS compatibility should be planned. Transfer your sensors or purchase compatible replacements and perform a relearn if required.

Plus Sizing And Common Upgrades

Because the provided data shows both a 20 inch wheel and a 19 inch tire, confirm your actual baseline first. A common approach is to maintain nearly the same overall tire diameter when changing rim diameter so the speedometer and gearing stay close to stock.

Example only, not OEM-verified: If your confirmed stock tire is 245/45R19, its overall diameter is roughly 27.7 inches. A 20 inch alternative with a similar diameter would be around 245/40R20, which is also approximately 27.7 inches. Use the calculator to verify the exact numbers and check inner and outer clearance on your chosen wheel width and offset. Always inspect fender and liner clearance at full lock and over bumps.

If you change wheel width from the provided 8.5 inches, offset must be chosen to preserve inner clearance to struts and outer clearance to fenders. Increasing width by 0.5 inch adds about 6.35 mm on each side; use the calculator to see how much offset change would be needed to keep the inner edge in the same location.

Installation Tips

Work on level ground, chock wheels, and use a floor jack and jack stands at the factory lift points. Test-fit one front and one rear wheel before mounting tires to verify hub bore fit, brake clearance, and lug seat compatibility.

Clean the hub face and the wheel mounting pad so they sit perfectly flat. Do not lubricate lug nut threads unless directed by the service manual. Install lug nuts by hand until snug. Lower the vehicle enough that the tire just contacts the ground and torque the lugs in a star pattern to the OEM specification from your owner’s manual. Re-torque after 50 to 100 miles.

If vibration occurs after installation, check hub-centric ring fit, wheel balance, and that the wheel seats fully on the hub without contacting the caliper or rotor hat.

Tools And Helpful Supplies

• Floor jack and jack stands rated for your vehicle - Floor jack: Search 3 ton floor jack - Jack stands: Search 3 ton jack stands
• 1/2 inch drive torque wrench to tighten lug nuts accurately - Search 1/2 inch torque wrench
• Breaker bar for stubborn lug nuts - Search 1/2 inch breaker bar
• Wheel chocks, wire brush for hub faces, and a quality tire pressure gauge

FAQs

What is the bolt pattern on the 2020 Impala?
It is 5x120 according to the data provided here. Verify on your vehicle or with OEM documentation before ordering.

What center bore do I need?
The listed center bore is 66.9 mm. Wheels with a larger bore can be used with hub-centric rings sized to 66.9 mm inner. A smaller bore will not fit.

The page shows a 20 inch wheel but a 19 inch tire. Which is correct?
That is an inconsistency in the provided data. Your trim may differ, or the entries may be from different sources. Check your door jamb tire label and your current wheel markings, then set that as the baseline in the calculator.

Will 5x120.65 or 5x4.75 wheels fit my Impala?
No, those are different patterns. Mixing patterns can cause unsafe clamping and vibration. Use only exact 5x120 wheels and confirm center bore and seat type.

What offset should I use?
The provided value is ET 45 mm for an 8.5 inch wheel. If you change wheel width or design, use the calculator to maintain inner clearance and avoid excessive outer poke. Always test-fit.

Do I need hub-centric rings?
If your aftermarket wheels have a larger center bore than 66.9 mm, yes. Use quality rings that match your wheel’s outer bore and the Impala’s 66.9 mm hub.

What is the correct lug nut torque?
This page does not list a torque value. Use the specification in your owner’s manual or OEM service information and tighten in a star pattern.

Can I move to 20 inch wheels?
Possibly, but only if overall tire diameter, brake clearance, and fender clearance check out. Use the calculator to match overall diameter and verify clearance, and confirm hardware compatibility.

Are wheel spacers safe on this car?
Only high-quality hub-centric spacers matched to 66.9 mm hubs and correct hardware, and only when needed to clear brakes or correct offset. Spacers change load paths; consult a professional and re-check torque frequently.

How do I keep ride height and speedometer close to stock when changing sizes?
Match overall tire diameter in the calculator within about 3 percent of your verified stock size. Adjust aspect ratio when changing rim diameter to keep total diameter similar.