2020 Rolls-Royce Cullinan Bolt Pattern & Tire Size
The 2020 Rolls-Royce Cullinan OEM tire size, bolt pattern, and wheel specifications are listed below. All data is based on industry-standard OEM reference specifications.
The 2020 Rolls-Royce Cullinan has a 5x120 bolt pattern, an OEM tire size of 255/45R22, and a 66.6mm center bore.
Other years of the Rolls-Royce Cullinan
2020 Rolls-Royce Cullinan Engine & Trim Levels
Detailed tire and wheel breakdown for the 2020 Rolls-Royce Cullinan
Tire geometry â 255/45R22
The 255/45R22 fitted to the 2020 Rolls-Royce Cullinan has a section width of 255mm and an aspect ratio of 45%, mounted on a 22-inch rim. That gives a sidewall height of 114.8mm (4.52") and an overall outside diameter of 788.3mm (31.04"). At highway speed this tire completes roughly 404 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2020 Rolls-Royce Cullinan while keeping the speedometer accurate, target a 265/39R23 (plus-one). For a softer ride or winter setup, a 245/52R21 (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 2020 Rolls-Royce Cullinan uses a 5x120 bolt pattern with a 66.6mm hub bore. Safe rim width range for the OEM tire is 8.5J â 9.5J, and offsets in the ET20 â ET30 window will clear suspension and fender without rubbing on most setups.
Staggered setup notes
The 2020 Rolls-Royce Cullinan ships staggered: 255/45R22 up front and 285/40R22 on the rear. That is a 285mm vs 255mm width difference â do not rotate front-to-rear, and replace tires in axle pairs to keep ABS and traction control balanced.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2020 Rolls-Royce Cullinan 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) | |
|---|---|---|---|---|
| Black Badge | Rear: 285/40R22 | 22x9.0J | ET25 |
Frequently Asked Questions
What tire size does the 2020 Rolls-Royce Cullinan Black Badge use?
The 2020 Rolls-Royce Cullinan Black Badge uses 255/45R22 tires as standard equipment.
What is the bolt pattern of the 2020 Rolls-Royce Cullinan?
The 2020 Rolls-Royce Cullinan has a 5x120 bolt pattern with a center bore of 66.6mm.
What is the wheel offset of the 2020 Rolls-Royce Cullinan?
The 2020 Rolls-Royce Cullinan has a wheel offset of ET25.
Other Vehicles with 5x120 Bolt Pattern
The following vehicles share the same 5x120 bolt pattern as the 2020 Rolls-Royce Cullinan, making wheel interchangeability possible (verify offset and center bore before swapping).