2021 Subaru Crosstrek — Limited
The 2021 Subaru Crosstrek Limited came from the factory equipped with 225/55R18 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.
225/55R18
| Section width | 225 mm |
|---|---|
| Aspect ratio (sidewall height) | 55% (123.8 mm) |
| Rim diameter | 18" |
| Overall tire diameter | ~27.7" |
| Revolutions per mile | ~727 |
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What this size means for your Subaru Crosstrek
On the 2021 Subaru Crosstrek Limited, the factory 225/55R18 measures about 27.7″ in overall diameter with a 123.8 mm (4.9″) sidewall, and completes roughly 727 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 2021 Subaru Crosstrek trims
Subaru Crosstrek tire sizes by year
- 2026 Subaru Crosstrek 225/60R17
- 2025 Subaru Crosstrek 225/60R17
- 2024 Subaru Crosstrek 225/60R17
- 2023 Subaru Crosstrek 225/60R17
- 2022 Subaru Crosstrek 225/60R17
- 2020 Subaru Crosstrek 225/60R17
- 2019 Subaru Crosstrek 225/60R17
- 2018 Subaru Crosstrek 225/60R17
- 2017 Subaru Crosstrek 225/55R17
- 2016 Subaru Crosstrek 225/55R17
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.