What is the bolt pattern on a 1964 Chevy Impala?
The bolt pattern on a 1964 Chevy Impala is 5 on 4.75 inches (5x4.75).
For restoration and wheel upgrades, this means five lug studs are arranged on a circle with a 4.75-inch diameter, a standard GM specification shared by many full-size Chevrolets of the era. When sourcing wheels or adapters, matching this pattern is essential for proper fit and safe operation.
Pattern specifics and compatibility
Understanding the 1964 Impala’s pattern helps ensure any new or replacement wheels will mount correctly and clear the braking and suspension components.
- Bolt circle: five lugs on a 4.75-inch diameter circle (5x4.75; 120.65 mm).
- Center bore: typically around 2.87 inches (about 73 mm); use hub rings if a wheel requires a larger bore for hub-centric mounting.
- Fitment considerations: Most 5x4.75 wheels from the era or compatible aftermarket options will fit the pattern, but you must confirm brake clearance and correct offset to avoid rubbing or alignment issues.
Before the list: Here are the core technical points to verify when selecting wheels for a 1964 Impala.
In short, the critical compatibility factors are the 5x4.75 bolt pattern, the center bore size, and ensuring appropriate brake clearance and offset for any aftermarket wheels.
How to verify on your car
To be certain you have the correct specification for your particular vehicle, perform these checks or consult a wheel specialist.
- Measure the lug circle by spanning a straight line across the centers of two opposite lug studs; the result should be close to 4.75 inches.
- Inspect the wheel hub bore on the spindle and compare it to the bore size listed on wheel specs; use hub-centric rings if needed for a precise fit.
- Refer to factory documentation or a trusted parts catalog for your specific 1964 Impala build to confirm the pattern and any model-year variations.
Following these steps helps ensure you select wheels that fit safely and align with the car’s original specifications.
Summary
For a 1964 Chevy Impala, the standard bolt pattern is 5 on 4.75 inches (5x120.65 mm), with a center bore of about 2.87 inches. This pattern is typical of GM full-size cars from the era, so most original-style wheels and many aftermarket options will fit—provided you verify center bore, offset, and brake clearance before purchase.
