2020 Bugatti Chiron Base / Pur Sport
The 2020 Bugatti Chiron Base / Pur Sport tire size and wheel specifications below reflect standard OEM reference fitment data for this trim level.
Detailed tire and wheel breakdown for the 2020 Bugatti Chiron
Tire geometry â 285/30R20
The 285/30R20 fitted to the 2020 Bugatti Chiron has a section width of 285mm and an aspect ratio of 30%, mounted on a 20-inch rim. That gives a sidewall height of 85.5mm (3.37") and an overall outside diameter of 679.0mm (26.73"). At highway speed this tire completes roughly 469 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 Bugatti Chiron while keeping the speedometer accurate, target a 295/25R21 (plus-one). For a softer ride or winter setup, a 275/36R19 (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 Bugatti Chiron uses a 5x130 bolt pattern with a 71.6mm hub bore. Safe rim width range for the OEM tire is 9.5J â 10.5J, and offsets in the ET45 â ET55 window will clear suspension and fender without rubbing on most setups.
Staggered setup notes
The 2020 Bugatti Chiron ships staggered: 285/30R20 up front and 355/25R21 on the rear. That is a 355mm vs 285mm 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 Bugatti Chiron 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%.
Fitment Specifications
| Engine & Trim | Tire Size | Rim Size | Offset (ET) |
|---|---|---|---|
| Base / Pur Sport | 285/30R20 Rear: 355/25R21 | 20" x 10.0 | ET50 |
Frequently Asked Questions
What tire size does the 2020 Bugatti Chiron Base / Pur Sport use?
The 2020 Bugatti Chiron Base / Pur Sport uses 285/30R20 tires as standard equipment.
What is the bolt pattern of the 2020 Bugatti Chiron Base / Pur Sport?
The 2020 Bugatti Chiron Base / Pur Sport has a 5x130 bolt pattern with a center bore of 71.6mm.
What is the wheel offset of the 2020 Bugatti Chiron Base / Pur Sport?
The 2020 Bugatti Chiron Base / Pur Sport has a wheel offset of ETET50.