2011 Mini Cooper — Countryman
The 2011 Mini Cooper Countryman shipped with 2 different factory tire sizes, depending on the wheel package it left the factory with (this can also reflect a staggered front/rear setup). Check your tire sidewall or door placard to confirm which one applies to your vehicle.
This trim shipped with more than one tire size (staggered fitment, front/rear, or optional wheel package). Confirm which one matches your vehicle by checking your tire sidewall or door placard.
205/55R17
| Section width | 205 mm |
|---|---|
| Aspect ratio (sidewall height) | 55% (112.8 mm) |
| Rim diameter | 17" |
| Overall tire diameter | ~25.9" |
| Revolutions per mile | ~779 |
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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 Mini Cooper
On the 2011 Mini Cooper Countryman, the factory 205/55R17 measures about 25.9″ in overall diameter with a 112.8 mm (4.4″) sidewall, and completes roughly 779 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.
The 205/55R17 and 225/45R18 roll within 0.1″ (0.4%) of each other in overall diameter, so they are interchangeable from a speedometer standpoint — the second size is an optional wheel package rather than a different rolling size.
Other 2011 Mini Cooper trims
- Clubman 175/65R15 / 195/55R16
- Convertible 175/65R15 / 195/55R16 / 205/45R17
- Hardtop 175/65R15 / 195/55R16 / 205/45R17
- John Cooper Works 205/45R17
- S Clubman 195/55R16 / 205/45R17 / 205/40R18
- S Convertible 195/55R16 / 205/45R17 / 205/40R18
- S Hardtop 195/55R16 / 205/45R17 / 205/40R18
Mini Cooper tire sizes by year
- 2026 Mini Cooper 215/45R17 / 215/40R18
- 2025 Mini Cooper 215/45R17 / 215/40R18
- 2024 Mini Cooper 175/65R15 / 195/55R16 / 205/45R17
- 2023 Mini Cooper 175/65R15 / 195/55R16 / 205/45R17
- 2022 Mini Cooper 175/65R15 / 195/55R16 / 205/45R17
- 2021 Mini Cooper 205/55R16 / 225/45R17 / 225/40R18
- 2020 Mini Cooper 205/55R16 / 225/45R17 / 225/40R18
- 2019 Mini Cooper 205/55R16 / 225/45R17 / 225/40R18
- 2018 Mini Cooper 205/55R16 / 225/45R17 / 225/40R18
- 2017 Mini Cooper 205/55R16 / 225/45R17 / 225/40R18
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.