2021 Polestar 1 Launch Edition
The 2021 Polestar 1 Launch Edition tire size and wheel specifications below reflect standard OEM reference fitment data for this trim level.
Detailed tire and wheel breakdown for the 2021 Polestar 1
Tire geometry â 275/30R21
The 275/30R21 fitted to the 2021 Polestar 1 has a section width of 275mm and an aspect ratio of 30%, mounted on a 21-inch rim. That gives a sidewall height of 82.5mm (3.25") and an overall outside diameter of 698.4mm (27.50"). At highway speed this tire completes roughly 456 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 Polestar 1 while keeping the speedometer accurate, target a 285/24R22 (plus-one). For a softer ride or winter setup, a 265/36R20 (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 Polestar 1 uses a 5x108 bolt pattern with a 63.4mm hub bore. Safe rim width range for the OEM tire is 8.5J â 9.5J, and offsets in the ET40 â ET50 window will clear suspension and fender without rubbing on most setups.
Staggered setup notes
The 2021 Polestar 1 ships staggered: 275/30R21 up front and 295/30R21 on the rear. That is a 295mm vs 275mm 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 2021 Polestar 1 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) |
|---|---|---|---|
| Launch Edition | 275/30R21 Rear: 295/30R21 | 21" x 9.0 | ET45 |
Frequently Asked Questions
What tire size does the 2021 Polestar 1 Launch Edition use?
The 2021 Polestar 1 Launch Edition uses 275/30R21 tires as standard equipment.
What is the bolt pattern of the 2021 Polestar 1 Launch Edition?
The 2021 Polestar 1 Launch Edition has a 5x108 bolt pattern with a center bore of 63.4mm.
What is the wheel offset of the 2021 Polestar 1 Launch Edition?
The 2021 Polestar 1 Launch Edition has a wheel offset of ETET45.