195/45R15 tire size
A 195/45R15 tire is 21.91 inches (556.5 mm) tall, 7.68 in (195 mm) wide and fits a 15-inch wheel. In inch notation it is roughly a 21.9x7.7R15.
| Overall diameter | 21.91 in | 556.5 mm |
|---|---|---|
| Section width | 7.68 in | 195 mm |
| Sidewall height | 3.45 in | 87.8 mm |
| Circumference | 68.83 in | 1,748 mm |
| Revolutions | 920.5 per mile | 572.0 per km |
| Rim diameter | 15 in | 381.0 mm |
Compare 195/45R15 with another size
Alternative sizes on the same 15-inch wheel
Sizes in use within ±3 % of the overall diameter of 195/45R15:
Plus and minus sizes for 195/45R15
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 205/55R13 | Minus 2 (13 in) | 21.88 in | −0.14% |
| 175/65R13 | Minus 2 (13 in) | 21.96 in | +0.22% |
| 185/60R13 | Minus 2 (13 in) | 21.74 in | −0.77% |
| 165/70R13 | Minus 2 (13 in) | 22.09 in | +0.84% |
| 185/55R14 | Minus 1 (14 in) | 22.01 in | +0.47% |
| 165/60R14 | Minus 1 (14 in) | 21.80 in | −0.52% |
| 175/60R14 | Minus 1 (14 in) | 22.27 in | +1.64% |
| 165/65R14 | Minus 1 (14 in) | 22.44 in | +2.44% |
Vehicles approved with 195/45R15 tires
Models whose Swiss type approval lists 195/45R15 as a standard or optional size (105 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 15-inch sizes
Reading the 195/45R15 size
- 195 — section width in millimetres (7.68 in).
- 45 — aspect ratio: the sidewall is 45 % of the width, 87.8 mm.
- R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
- 15 — fits a 15-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.