2021 Chevrolet Silverado 1500 Bolt Pattern & Tire Size
The 2021 Chevrolet Silverado 1500 OEM tire size, bolt pattern, and wheel specifications are listed below. All data is based on industry-standard OEM reference specifications.
The 2021 Chevrolet Silverado 1500 has a 6x139.7 bolt pattern, an OEM tire size of 275/60R20, and a 78.1mm center bore.
Other years of the Chevrolet Silverado 1500
2021 Chevrolet Silverado 1500 Engine & Trim Levels
Detailed tire and wheel breakdown for the 2021 Chevrolet Silverado 1500
Tire geometry â 275/60R20
The 275/60R20 fitted to the 2021 Chevrolet Silverado 1500 has a section width of 275mm and an aspect ratio of 60%, mounted on a 20-inch rim. That gives a sidewall height of 165.0mm (6.50") and an overall outside diameter of 838.0mm (32.99"). At highway speed this tire completes roughly 380 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2021 Chevrolet Silverado 1500 while keeping the speedometer accurate, target a 285/53R21 (plus-one). For a softer ride or winter setup, a 265/67R19 (minus-one) keeps the overall diameter within Âą3% of stock, which is the industry tolerance for ABS and stability control to stay calibrated.
Wheel fitment specs
The 2021 Chevrolet Silverado 1500 uses a 6x139.7 bolt pattern with a 78.1mm hub bore. Safe rim width range for the OEM tire is 8.5J â 9.5J, and offsets in the ET23 â ET33 window will clear suspension and fender without rubbing on most setups.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2021 Chevrolet Silverado 1500 is printed on the driver-side door jamb sticker â always defer to that value, not to the maximum pressure printed on the tire sidewall. Check pressure monthly and before long trips; under-inflation by 20% can reduce tread life by 25%.
OEM Wheel & Tire Specs
| Engine & Trim | Tire Size | Rim Size | Offset (ET) | |
|---|---|---|---|---|
| High Country | 20x9.0J | ET28 | ||
| LTZ / High Country | 20x9.0J | ET28 |
Frequently Asked Questions
What tire size does the 2021 Chevrolet Silverado 1500 High Country use?
The 2021 Chevrolet Silverado 1500 High Country uses 275/60R20 tires as standard equipment.
What tire size does the 2021 Chevrolet Silverado 1500 LTZ / High Country use?
The 2021 Chevrolet Silverado 1500 LTZ / High Country uses 275/60R20 tires as standard equipment.
What is the bolt pattern of the 2021 Chevrolet Silverado 1500?
The 2021 Chevrolet Silverado 1500 has a 6x139.7 bolt pattern with a center bore of 78.1mm.
What is the wheel offset of the 2021 Chevrolet Silverado 1500?
The 2021 Chevrolet Silverado 1500 has a wheel offset of ET28.
Other Vehicles with 6x139.7 Bolt Pattern
The following vehicles share the same 6x139.7 bolt pattern as the 2021 Chevrolet Silverado 1500, making wheel interchangeability possible (verify offset and center bore before swapping).