2021 Acura RDX 2.0L Turbo Base / Tech
The 2021 Acura RDX 2.0L Turbo Base / Tech tire size and wheel specifications below reflect standard OEM reference fitment data for this trim level.
Detailed tire and wheel breakdown for the 2021 Acura RDX
Tire geometry â 235/55R19
The 235/55R19 fitted to the 2021 Acura RDX has a section width of 235mm and an aspect ratio of 55%, mounted on a 19-inch rim. That gives a sidewall height of 129.3mm (5.09") and an overall outside diameter of 741.1mm (29.18"). At highway speed this tire completes roughly 430 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 Acura RDX while keeping the speedometer accurate, target a 245/48R20 (plus-one). For a softer ride or winter setup, a 225/63R18 (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 Acura RDX uses a 5x114.3 bolt pattern with a 64.1mm hub bore. Safe rim width range for the OEM tire is 7.5J â 8.5J, and offsets in the ET45 â ET55 window will clear suspension and fender without rubbing on most setups.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2021 Acura RDX 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) |
|---|---|---|---|
| 2.0L Turbo Base / Tech | 235/55R19 | 19" x 8.0 | ET50 |
Frequently Asked Questions
What tire size does the 2021 Acura RDX 2.0L Turbo Base / Tech use?
The 2021 Acura RDX 2.0L Turbo Base / Tech uses 235/55R19 tires as standard equipment.
What is the bolt pattern of the 2021 Acura RDX 2.0L Turbo Base / Tech?
The 2021 Acura RDX 2.0L Turbo Base / Tech has a 5x114.3 bolt pattern with a center bore of 64.1mm.
What is the wheel offset of the 2021 Acura RDX 2.0L Turbo Base / Tech?
The 2021 Acura RDX 2.0L Turbo Base / Tech has a wheel offset of ETET50.