2022 Kia Niro — Touring Special Edition
The 2022 Kia Niro Touring Special Edition came from the factory equipped with 225/45R18 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.
225/45R18
| Section width | 225 mm |
|---|---|
| Aspect ratio (sidewall height) | 45% (101.3 mm) |
| Rim diameter | 18" |
| Overall tire diameter | ~26" |
| Revolutions per mile | ~777 |
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What this size means for your Kia Niro
On the 2022 Kia Niro Touring Special Edition, the factory 225/45R18 measures about 26″ in overall diameter with a 101.3 mm (4″) sidewall, and completes roughly 777 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 passenger (P-metric / Euro-metric) size.
Other 2022 Kia Niro trims
- EV 215/55R17
- EX Premium 205/60R16
- LX 205/60R16
- LXS 205/60R16
- LXS Special Edition 205/60R16
- Plug-In Hybrid 205/60R16
Kia Niro tire sizes by year
- 2026 Kia Niro 205/60R16
- 2025 Kia Niro 215/55R17
- 2024 Kia Niro 215/55R17
- 2023 Kia Niro 215/55R17
- 2021 Kia Niro 215/55R17
- 2020 Kia Niro 215/55R17
- 2019 Kia Niro 215/55R17
- 2018 Kia Niro 205/60R16 / 225/45R18
- 2017 Kia Niro 205/60R16
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.