2019 Acura MDX — FWD Advance Package
The 2019 Acura MDX FWD Advance Package came from the factory equipped with 265/45R20 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.
265/45R20
| Section width | 265 mm |
|---|---|
| Aspect ratio (sidewall height) | 45% (119.3 mm) |
| Rim diameter | 20" |
| Overall tire diameter | ~29.4" |
| Revolutions per mile | ~686 |
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What this size means for your Acura MDX
On the 2019 Acura MDX FWD Advance Package, the factory 265/45R20 measures about 29.4″ in overall diameter with a 119.3 mm (4.7″) sidewall, and completes roughly 686 revolutions per mile. Its 45-series aspect ratio gives a low-profile sidewall tuned for sharper handling, common on sport trims and larger-wheel packages. In tire terms it is a large-diameter fitment.
Other 2019 Acura MDX trims
- A-Spec Package 265/45R20
- FWD Standard 245/60R18
- FWD Technology Package 245/50R20
- SH-AWD Advance Package 265/45R20
- SH-AWD Sport Hybrid 245/50R20
- SH-AWD Standard 245/60R18
- SH-AWD Technology Package 245/50R20
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
- 2022 Acura MDX 255/50R20
- 2020 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.