215/45R20 tire size
A 215/45R20 tire is 27.62 inches (701.5 mm) tall, 8.46 in (215 mm) wide and fits a 20-inch wheel. In inch notation it is roughly a 27.6x8.5R20 — a "28-inch" tire.
| Overall diameter | 27.62 in | 701.5 mm |
|---|---|---|
| Section width | 8.46 in | 215 mm |
| Sidewall height | 3.81 in | 96.8 mm |
| Circumference | 86.76 in | 2,204 mm |
| Revolutions | 730.2 per mile | 453.8 per km |
| Rim diameter | 20 in | 508.0 mm |
Compare 215/45R20 with another size
Alternative sizes on the same 20-inch wheel
Sizes in use within ±3 % of the overall diameter of 215/45R20:
Plus and minus sizes for 215/45R20
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 245/50R18 | Minus 2 (18 in) | 27.65 in | +0.10% |
| 205/60R18 | Minus 2 (18 in) | 27.69 in | +0.24% |
| 225/55R18 | Minus 2 (18 in) | 27.74 in | +0.46% |
| 265/45R18 | Minus 2 (18 in) | 27.39 in | −0.83% |
| 245/45R19 | Minus 1 (19 in) | 27.68 in | +0.23% |
| 215/50R19 | Minus 1 (19 in) | 27.46 in | −0.56% |
| 195/55R19 | Minus 1 (19 in) | 27.44 in | −0.63% |
| 225/50R19 | Minus 1 (19 in) | 27.86 in | +0.87% |
| 245/35R21 | Plus 1 (21 in) | 27.75 in | +0.48% |
| 265/30R21 | Plus 1 (21 in) | 27.26 in | −1.30% |
| 255/35R21 | Plus 1 (21 in) | 28.03 in | +1.48% |
| 265/35R21 | Plus 1 (21 in) | 28.30 in | +2.48% |
Vehicles approved with 215/45R20 tires
Models whose Swiss type approval lists 215/45R20 as a standard or optional size (172 approvals in total). Always check your own vehicle's placard or papers.
Source: Swiss Federal Roads Office (FEDRO/ASTRA), open government data. Original data (downloaded 2026-09-29). Data processed by us; errors in processing are ours, not the publisher's.
Nearby 20-inch sizes
Reading the 215/45R20 size
- 215 — section width in millimetres (8.46 in).
- 45 — aspect ratio: the sidewall is 45 % of the width, 96.8 mm.
- R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
- 20 — fits a 20-inch diameter wheel.
The load index and speed rating (for example 91V) follow the size on the sidewall. They must meet at least the values on your vehicle's tire placard.