195/45R17 tire size
A 195/45R17 tire is 23.91 inches (607.3 mm) tall, 7.68 in (195 mm) wide and fits a 17-inch wheel. In inch notation it is roughly a 23.9x7.7R17.
| Overall diameter | 23.91 in | 607.3 mm |
|---|---|---|
| Section width | 7.68 in | 195 mm |
| Sidewall height | 3.45 in | 87.8 mm |
| Circumference | 75.11 in | 1,908 mm |
| Revolutions | 843.5 per mile | 524.1 per km |
| Rim diameter | 17 in | 431.8 mm |
Compare 195/45R17 with another size
Alternative sizes on the same 17-inch wheel
Sizes in use within ±3 % of the overall diameter of 195/45R17:
Plus and minus sizes for 195/45R17
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 205/55R15 | Minus 2 (15 in) | 23.88 in | −0.13% |
| 175/65R15 | Minus 2 (15 in) | 23.96 in | +0.20% |
| 225/50R15 | Minus 2 (15 in) | 23.86 in | −0.21% |
| 185/60R15 | Minus 2 (15 in) | 23.74 in | −0.71% |
| 225/45R16 | Minus 1 (16 in) | 23.97 in | +0.26% |
| 185/55R16 | Minus 1 (16 in) | 24.01 in | +0.43% |
| 205/50R16 | Minus 1 (16 in) | 24.07 in | +0.68% |
| 195/50R16 | Minus 1 (16 in) | 23.68 in | −0.97% |
| 215/35R18 | Plus 1 (18 in) | 23.93 in | +0.07% |
| 225/35R18 | Plus 1 (18 in) | 24.20 in | +1.22% |
| 205/40R18 | Plus 1 (18 in) | 24.46 in | +2.29% |
| 235/35R18 | Plus 1 (18 in) | 24.48 in | +2.37% |
Vehicles approved with 195/45R17 tires
Models whose Swiss type approval lists 195/45R17 as a standard or optional size (41 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 17-inch sizes
Reading the 195/45R17 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).
- 17 — fits a 17-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.