285/35R23 tire size
A 285/35R23 tire is 30.85 inches (783.7 mm) tall, 11.22 in (285 mm) wide and fits a 23-inch wheel. In inch notation it is roughly a 30.9x11.2R23 — a "31-inch" tire.
| Overall diameter | 30.85 in | 783.7 mm |
|---|---|---|
| Section width | 11.22 in | 285 mm |
| Sidewall height | 3.93 in | 99.8 mm |
| Circumference | 96.93 in | 2,462 mm |
| Revolutions | 653.7 per mile | 406.2 per km |
| Rim diameter | 23 in | 584.2 mm |
Compare 285/35R23 with another size
Alternative sizes on the same 23-inch wheel
Sizes in use within ±3 % of the overall diameter of 285/35R23:
Plus and minus sizes for 285/35R23
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 315/40R21 | Minus 2 (21 in) | 30.92 in | +0.22% |
| 275/45R21 | Minus 2 (21 in) | 30.74 in | −0.36% |
| 255/50R21 | Minus 2 (21 in) | 31.04 in | +0.60% |
| 285/45R21 | Minus 2 (21 in) | 31.10 in | +0.79% |
| 325/35R22 | Minus 1 (22 in) | 30.96 in | +0.33% |
| 285/40R22 | Minus 1 (22 in) | 30.98 in | +0.40% |
| 315/35R22 | Minus 1 (22 in) | 30.68 in | −0.56% |
| 255/45R22 | Minus 1 (22 in) | 31.04 in | +0.59% |
Vehicles approved with 285/35R23 tires
Models whose Swiss type approval lists 285/35R23 as a standard or optional size (433 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 23-inch sizes
Reading the 285/35R23 size
- 285 — section width in millimetres (11.22 in).
- 35 — aspect ratio: the sidewall is 35 % of the width, 99.8 mm.
- R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
- 23 — fits a 23-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.