185/70R13 tire size
A 185/70R13 tire is 23.20 inches (589.2 mm) tall, 7.28 in (185 mm) wide and fits a 13-inch wheel. In inch notation it is roughly a 23.2x7.3R13.
| Overall diameter | 23.20 in | 589.2 mm |
|---|---|---|
| Section width | 7.28 in | 185 mm |
| Sidewall height | 5.10 in | 129.5 mm |
| Circumference | 72.88 in | 1,851 mm |
| Revolutions | 869.4 per mile | 540.2 per km |
| Rim diameter | 13 in | 330.2 mm |
Compare 185/70R13 with another size
Alternative sizes on the same 13-inch wheel
Sizes in use within ±3 % of the overall diameter of 185/70R13:
Plus and minus sizes for 185/70R13
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 195/60R14 | Plus 1 (14 in) | 23.21 in | +0.07% |
| 165/70R14 | Plus 1 (14 in) | 23.09 in | −0.44% |
| 175/65R14 | Plus 1 (14 in) | 22.96 in | −1.04% |
| 185/65R14 | Plus 1 (14 in) | 23.47 in | +1.17% |
| 175/60R15 | Plus 2 (15 in) | 23.27 in | +0.31% |
| 205/50R15 | Plus 2 (15 in) | 23.07 in | −0.54% |
| 185/55R15 | Plus 2 (15 in) | 23.01 in | −0.80% |
| 195/55R15 | Plus 2 (15 in) | 23.44 in | +1.07% |
| 205/45R16 | Plus 3 (16 in) | 23.26 in | +0.29% |
| 185/50R16 | Plus 3 (16 in) | 23.28 in | +0.37% |
| 195/45R16 | Plus 3 (16 in) | 22.91 in | −1.24% |
| 175/50R16 | Plus 3 (16 in) | 22.89 in | −1.32% |
Vehicles approved with 185/70R13 tires
Models whose Swiss type approval lists 185/70R13 as a standard or optional size (10 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 13-inch sizes
Reading the 185/70R13 size
- 185 — section width in millimetres (7.28 in).
- 70 — aspect ratio: the sidewall is 70 % of the width, 129.5 mm.
- R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
- 13 — fits a 13-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.