2020 Vauxhall Astra Bolt Pattern & Tire Size
The 2020 Vauxhall Astra OEM tire size, bolt pattern, and wheel specifications are listed below. All data is based on industry-standard OEM reference specifications.
The 2020 Vauxhall Astra has a 5x105 bolt pattern, an OEM tire size of 225/40R18, and a 56.6mm center bore.
Other years of the Vauxhall Astra
2020 Vauxhall Astra Engine & Trim Levels
Detailed tire and wheel breakdown for the 2020 Vauxhall Astra
Tire geometry â 225/40R18
The 225/40R18 fitted to the 2020 Vauxhall Astra has a section width of 225mm and an aspect ratio of 40%, mounted on a 18-inch rim. That gives a sidewall height of 90.0mm (3.54") and an overall outside diameter of 637.2mm (25.09"). At highway speed this tire completes roughly 500 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 Vauxhall Astra while keeping the speedometer accurate, target a 235/33R19 (plus-one). For a softer ride or winter setup, a 215/48R17 (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 Vauxhall Astra uses a 5x105 bolt pattern with a 56.6mm hub bore. Safe rim width range for the OEM tire is 7.0J â 8.0J, and offsets in the ET39 â ET49 window will clear suspension and fender without rubbing on most setups.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2020 Vauxhall Astra 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
Frequently Asked Questions
What tire size does the 2020 Vauxhall Astra Elite use?
The 2020 Vauxhall Astra Elite uses 225/40R18 tires as standard equipment.
What is the bolt pattern of the 2020 Vauxhall Astra?
The 2020 Vauxhall Astra has a 5x105 bolt pattern with a center bore of 56.6mm.
What is the wheel offset of the 2020 Vauxhall Astra?
The 2020 Vauxhall Astra has a wheel offset of ET44.
Other Vehicles with 5x105 Bolt Pattern
The following vehicles share the same 5x105 bolt pattern as the 2020 Vauxhall Astra, making wheel interchangeability possible (verify offset and center bore before swapping).