2022 BMW Z4 sDrive30i
The 2022 BMW Z4 sDrive30i tire size and wheel specifications below reflect standard OEM reference fitment data for this trim level.
Detailed tire and wheel breakdown for the 2022 BMW Z4
Tire geometry â 225/45R18
The 225/45R18 fitted to the 2022 BMW Z4 has a section width of 225mm and an aspect ratio of 45%, mounted on a 18-inch rim. That gives a sidewall height of 101.3mm (3.99") and an overall outside diameter of 659.7mm (25.97"). At highway speed this tire completes roughly 483 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2022 BMW Z4 while keeping the speedometer accurate, target a 235/38R19 (plus-one). For a softer ride or winter setup, a 215/53R17 (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 2022 BMW Z4 uses a 5x112 bolt pattern with a 66.6mm hub bore. Safe rim width range for the OEM tire is 7.5J â 8.5J, and offsets in the ET25 â ET35 window will clear suspension and fender without rubbing on most setups.
Staggered setup notes
The 2022 BMW Z4 ships staggered: 225/45R18 up front and 255/40R18 on the rear. That is a 255mm vs 225mm 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 2022 BMW Z4 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) |
|---|---|---|---|
| sDrive30i | 225/45R18 Rear: 255/40R18 | 18" x 8.0 | ET30 |
Frequently Asked Questions
What tire size does the 2022 BMW Z4 sDrive30i use?
The 2022 BMW Z4 sDrive30i uses 225/45R18 tires as standard equipment.
What is the bolt pattern of the 2022 BMW Z4 sDrive30i?
The 2022 BMW Z4 sDrive30i has a 5x112 bolt pattern with a center bore of 66.6mm.
What is the wheel offset of the 2022 BMW Z4 sDrive30i?
The 2022 BMW Z4 sDrive30i has a wheel offset of ETET30.