2021 GMC Acadia Bolt Pattern & Tire Size
The 2021 GMC Acadia OEM tire size, bolt pattern, and wheel specifications are listed below. All data is based on industry-standard OEM reference specifications.
The 2021 GMC Acadia has a 6x120 bolt pattern, an OEM tire size of 235/65R18, and a 66.9mm center bore.
Other years of the GMC Acadia
2021 GMC Acadia Engine & Trim Levels
Detailed tire and wheel breakdown for the 2021 GMC Acadia
Tire geometry â 235/65R18
The 235/65R18 fitted to the 2021 GMC Acadia has a section width of 235mm and an aspect ratio of 65%, mounted on a 18-inch rim. That gives a sidewall height of 152.8mm (6.01") and an overall outside diameter of 762.7mm (30.03"). At highway speed this tire completes roughly 417 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 GMC Acadia while keeping the speedometer accurate, target a 245/57R19 (plus-one). For a softer ride or winter setup, a 225/74R17 (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 GMC Acadia uses a 6x120 bolt pattern with a 66.9mm hub bore. Safe rim width range for the OEM tire is 7.0J â 8.0J, and offsets in the ET45 â ET55 window will clear suspension and fender without rubbing on most setups.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2021 GMC Acadia 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
Frequently Asked Questions
What tire size does the 2021 GMC Acadia SLT use?
The 2021 GMC Acadia SLT uses 235/65R18 tires as standard equipment.
What is the bolt pattern of the 2021 GMC Acadia?
The 2021 GMC Acadia has a 6x120 bolt pattern with a center bore of 66.9mm.
What is the wheel offset of the 2021 GMC Acadia?
The 2021 GMC Acadia has a wheel offset of ET50.
Other Vehicles with 6x120 Bolt Pattern
The following vehicles share the same 6x120 bolt pattern as the 2021 GMC Acadia, making wheel interchangeability possible (verify offset and center bore before swapping).