2019 Audi Q8 S-Line Pack
The 2019 Audi Q8 S-Line Pack tire size and wheel specifications below reflect standard OEM reference fitment data for this trim level.
Detailed tire and wheel breakdown for the 2019 Audi Q8
Tire geometry â 285/45R21
The 285/45R21 fitted to the 2019 Audi Q8 has a section width of 285mm and an aspect ratio of 45%, mounted on a 21-inch rim. That gives a sidewall height of 128.3mm (5.05") and an overall outside diameter of 789.9mm (31.10"). At highway speed this tire completes roughly 403 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2019 Audi Q8 while keeping the speedometer accurate, target a 295/39R22 (plus-one). For a softer ride or winter setup, a 275/51R20 (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 2019 Audi Q8 uses a 5x112 bolt pattern with a 66.5mm hub bore. Safe rim width range for the OEM tire is 9.5J â 10.5J, and offsets in the ET15 â ET25 window will clear suspension and fender without rubbing on most setups.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2019 Audi Q8 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) |
|---|---|---|---|
| S-Line Pack | 285/45R21 | 21" x 10.0 | ET20 |
Frequently Asked Questions
What tire size does the 2019 Audi Q8 S-Line Pack use?
The 2019 Audi Q8 S-Line Pack uses 285/45R21 tires as standard equipment.
What is the bolt pattern of the 2019 Audi Q8 S-Line Pack?
The 2019 Audi Q8 S-Line Pack has a 5x112 bolt pattern with a center bore of 66.5mm.
What is the wheel offset of the 2019 Audi Q8 S-Line Pack?
The 2019 Audi Q8 S-Line Pack has a wheel offset of ETET20.