2022 Acura MDX — Base Model
The 2022 Acura MDX Base Model came from the factory equipped with 255/55R19 tires. If your vehicle has since been fitted with aftermarket or upsized wheels, your actual tire size may no longer match this factory spec — always confirm against your door placard before buying.
255/55R19
| Section width | 255 mm |
|---|---|
| Aspect ratio (sidewall height) | 55% (140.3 mm) |
| Rim diameter | 19" |
| Overall tire diameter | ~30" |
| Revolutions per mile | ~671 |
Compare prices at:
What this size means for your Acura MDX
On the 2022 Acura MDX Base Model, the factory 255/55R19 measures about 30″ in overall diameter with a 140.3 mm (5.5″) sidewall, and completes roughly 671 revolutions per mile. Its 55-series aspect ratio gives a balanced everyday-passenger profile — enough sidewall to soak up road shock while keeping steering response crisp. In tire terms it is a passenger (P-metric / Euro-metric) size.
Other 2022 Acura MDX trims
- A-Spec Package 255/50R20
- Advance Package 255/50R20
- Technology Package 255/50R20
- Type-S 275/40R21
Acura MDX tire sizes by year
- 2026 Acura MDX 255/50R20
- 2025 Acura MDX 255/50R20
- 2024 Acura MDX 255/50R20
- 2023 Acura MDX 255/50R20
- 2020 Acura MDX 265/45R20
- 2019 Acura MDX 265/45R20
- 2018 Acura MDX 245/60R18 / 245/50R20
- 2017 Acura MDX 245/60R18 / 245/50R20
- 2016 Acura MDX 245/60R18 / 245/55R19
- 2015 Acura MDX 245/60R18 / 245/55R19
How to read a tire size
A tire size like 225/45R17 breaks down into three parts:
the first number is the section width in millimeters
(the tire's width from sidewall to sidewall), the second is the
aspect ratio — the sidewall's height as a percentage of
that width — and the number after the "R" is the rim
diameter in inches. A letter prefix (P or LT) indicates
Passenger or Light Truck construction; its absence usually means
Euro-metric sizing.
Some trucks and off-road tires instead use "flotation" sizing, like
37X12.50R17 — here the numbers are the tire's overall
diameter and width in inches directly, with the rim diameter last.
Always verify against the tire information placard on your driver's-side door jamb or your owner's manual before purchasing — tire size can vary by factory option package even within the same trim.