185/55R15C tire size
A 185/55R15C (C = commercial / van) tire is 23.01 inches (584.5 mm) tall, 7.28 in (185 mm) wide and fits a 15-inch wheel. In inch notation it is roughly a 23.0x7.3R15.
| Overall diameter | 23.01 in | 584.5 mm |
|---|---|---|
| Section width | 7.28 in | 185 mm |
| Sidewall height | 4.01 in | 101.8 mm |
| Circumference | 72.29 in | 1,836 mm |
| Revolutions | 876.4 per mile | 544.6 per km |
| Rim diameter | 15 in | 381.0 mm |
Compare 185/55R15C with another size
Alternative sizes on the same 15-inch wheel
Sizes in use within ±3 % of the overall diameter of 185/55R15C:
Plus and minus sizes for 185/55R15C
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 185/70R13 | Minus 2 (13 in) | 23.20 in | +0.80% |
| 155/80R13 | Minus 2 (13 in) | 22.76 in | −1.08% |
| 205/60R13 | Minus 2 (13 in) | 22.69 in | −1.42% |
| 175/70R13 | Minus 2 (13 in) | 22.65 in | −1.59% |
| 175/65R14 | Minus 1 (14 in) | 22.96 in | −0.24% |
| 165/70R14 | Minus 1 (14 in) | 23.09 in | +0.36% |
| 195/60R14 | Minus 1 (14 in) | 23.21 in | +0.87% |
| 185/60R14 | Minus 1 (14 in) | 22.74 in | −1.18% |
| 195/45R16 | Plus 1 (16 in) | 22.91 in | −0.44% |
| 175/50R16 | Plus 1 (16 in) | 22.89 in | −0.53% |
| 215/40R16 | Plus 1 (16 in) | 22.77 in | −1.04% |
| 205/45R16 | Plus 1 (16 in) | 23.26 in | +1.09% |
| 195/40R17 | Plus 2 (17 in) | 23.14 in | +0.56% |
| 225/35R17 | Plus 2 (17 in) | 23.20 in | +0.82% |
| 205/40R17 | Plus 2 (17 in) | 23.46 in | +1.93% |
| 185/45R17 | Plus 2 (17 in) | 23.56 in | +2.36% |
Vehicles approved with 185/55R15C tires
Models whose Swiss type approval lists 185/55R15C as a standard or optional size (20 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 185/55R15C size
- 185 — section width in millimetres (7.28 in).
- 55 — aspect ratio: the sidewall is 55 % of the width, 101.8 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.
- C — commercial (van) construction with a higher load capacity at higher pressure.
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.