2026 Subaru WRX GT
The 2026 Subaru WRX GT tire size and wheel specifications below reflect standard OEM reference fitment data for this trim level.
Detailed tire and wheel breakdown for the 2026 Subaru WRX
Tire geometry â 245/40R18
The 245/40R18 fitted to the 2026 Subaru WRX has a section width of 245mm and an aspect ratio of 40%, mounted on a 18-inch rim. That gives a sidewall height of 98.0mm (3.86") and an overall outside diameter of 653.2mm (25.72"). At highway speed this tire completes roughly 487 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2026 Subaru WRX while keeping the speedometer accurate, target a 255/33R19 (plus-one). For a softer ride or winter setup, a 235/47R17 (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 2026 Subaru WRX uses a 5x114.3 bolt pattern with a 56.1mm hub bore. Safe rim width range for the OEM tire is 8.0J â 9.0J, and offsets in the ET50 â ET60 window will clear suspension and fender without rubbing on most setups.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2026 Subaru WRX 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) |
|---|---|---|---|
| GT | 245/40R18 | 18" x 8.5 | ET55 |
Frequently Asked Questions
What tire size does the 2026 Subaru WRX GT use?
The 2026 Subaru WRX GT uses 245/40R18 tires as standard equipment.
What is the bolt pattern of the 2026 Subaru WRX GT?
The 2026 Subaru WRX GT has a 5x114.3 bolt pattern with a center bore of 56.1mm.
What is the wheel offset of the 2026 Subaru WRX GT?
The 2026 Subaru WRX GT has a wheel offset of ETET55.