2018 Dodge Durango — R/T
The 2018 Dodge Durango R/T came from the factory equipped with 265/50R20 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.
265/50R20
| Section width | 265 mm |
|---|---|
| Aspect ratio (sidewall height) | 50% (132.5 mm) |
| Rim diameter | 20" |
| Overall tire diameter | ~30.4" |
| Revolutions per mile | ~663 |
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What this size means for your Dodge Durango
On the 2018 Dodge Durango R/T, the factory 265/50R20 measures about 30.4″ in overall diameter with a 132.5 mm (5.2″) sidewall, and completes roughly 663 revolutions per mile. Its 50-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 large-diameter fitment.
Other 2018 Dodge Durango trims
Dodge Durango tire sizes by year
- 2026 Dodge Durango 265/60R18 / 265/50R20
- 2025 Dodge Durango 265/60R18 / 265/50R20
- 2024 Dodge Durango 265/50R20
- 2023 Dodge Durango 265/50R20
- 2022 Dodge Durango 265/50R20
- 2021 Dodge Durango 265/50R20
- 2020 Dodge Durango 265/50R20
- 2019 Dodge Durango 265/50R20
- 2017 Dodge Durango 265/50R20
- 2016 Dodge Durango 265/50R20
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.