What is the bolt pattern on a 21 Chevy 1500?
The bolt pattern on the 2021 Chevrolet Silverado 1500 is 6 on 139.7 mm, commonly written as 6x139.7 mm (6x5.5 inches).
Expanded explanation: This means there are six lug studs arranged evenly around a circle with a diameter of 139.7 millimeters. This configuration is standard for the 2021 Silverado 1500 across most trims and aligns with many aftermarket wheels designed for 6x139.7. When swapping wheels, also verify the center bore (78.1 mm) and ensure proper brake clearance and offset compatibility to avoid rubbing or alignment issues.
Bolt pattern details for the Silverado 1500
Before listing the key facts, note that these details help you identify wheels that will fit the 2021 Silverado 1500 without adapters.
- Bolt pattern: 6x139.7 mm (6 on a 139.7 mm circle; 6x5.5 inches).
- Center bore: 78.1 mm (hub-centric to match the axle hub).
- Typical fitment: Most factory and aftermarket wheels advertised as 6x139.7 mm fit the Silverado 1500; always confirm specific wheel specs for brake clearance and offset.
Conclusion: With these checks, you can confidently select wheels that fit the 2021 Silverado 1500 without adapters.
Notes for wheel upgrades
When considering aftermarket wheels, pay attention to the following:
- Pattern compatibility: 6x139.7 mm applies to the 2021 Silverado 1500 across trims; some aftermarket wheels may list 6x139.7 as compatible.
- Center bore and rings: If the wheel's center bore is larger than 78.1 mm, use a hub-centric ring to center the wheel; if smaller, the wheel will not fit properly.
- Offset and clearance: Ensure the offset maintains proper braking and suspension clearance to avoid rubbing and steering issues.
Tip: When in doubt, consult the wheel manufacturer or a professional installer to confirm fitment for your exact truck and trim level.
Summary
The 2021 Chevrolet Silverado 1500 uses a 6x139.7 mm bolt pattern with a 78.1 mm center bore. For wheels, verify offset, backspacing, and brake clearance, and consider hub-centric rings if the wheel bore is larger than 78.1 mm. This ensures reliable fitment and safe driving performance.
