285/40R19 tire size
A 285/40R19 tire is 27.98 inches (710.6 mm) tall, 11.22 in (285 mm) wide and fits a 19-inch wheel. In inch notation it is roughly a 28.0x11.2R19 — a "28-inch" tire.
| Overall diameter | 27.98 in | 710.6 mm |
|---|---|---|
| Section width | 11.22 in | 285 mm |
| Sidewall height | 4.49 in | 114.0 mm |
| Circumference | 87.89 in | 2,232 mm |
| Revolutions | 720.9 per mile | 447.9 per km |
| Rim diameter | 19 in | 482.6 mm |
Compare 285/40R19 with another size
Alternative sizes on the same 19-inch wheel
Sizes in use within ±3 % of the overall diameter of 285/40R19:
Plus and minus sizes for 285/40R19
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 255/55R17 | Minus 2 (17 in) | 28.04 in | +0.24% |
| 255/50R18 | Minus 1 (18 in) | 28.04 in | +0.23% |
| 285/45R18 | Minus 1 (18 in) | 28.10 in | +0.44% |
| 275/45R18 | Minus 1 (18 in) | 27.74 in | −0.83% |
| 265/45R18 | Minus 1 (18 in) | 27.39 in | −2.10% |
| 255/40R20 | Plus 1 (20 in) | 28.03 in | +0.20% |
| 335/30R20 | Plus 1 (20 in) | 27.91 in | −0.23% |
| 285/35R20 | Plus 1 (20 in) | 27.85 in | −0.44% |
| 295/35R20 | Plus 1 (20 in) | 28.13 in | +0.55% |
| 295/30R21 | Plus 2 (21 in) | 27.97 in | −0.03% |
| 255/35R21 | Plus 2 (21 in) | 28.03 in | +0.18% |
| 305/30R21 | Plus 2 (21 in) | 28.20 in | +0.82% |
| 285/30R21 | Plus 2 (21 in) | 27.73 in | −0.87% |
| 285/30R22 | Plus 3 (22 in) | 28.73 in | +2.70% |
Vehicles approved with 285/40R19 tires
Models whose Swiss type approval lists 285/40R19 as a standard or optional size (481 approvals in total). Always check your own vehicle's placard or papers.
- BMW M8
- Mercedes-Benz S-Class
- Porsche Panamera
- BMW M5
- Maserati GranTurismo
- Maserati GranCabrio
- Ferrari California
- Lamborghini 724
- Maserati Quattroporte
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 19-inch sizes
- 265/30R19 (−9.7%)
- 265/35R19 (−6.0%)
- 265/40R19 (−2.3%)
- 265/45R19 (+1.5%)
- 265/50R19 (+5.2%)
- 275/30R19 (−8.9%)
- 275/35R19 (−5.0%)
- 275/40R19 (−1.1%)
- 275/45R19 (+2.7%)
- 275/50R19 (+6.6%)
- 285/30R19 (−8.0%)
- 285/35R19 (−4.0%)
- 285/45R19 (+4.0%)
- 295/30R19 (−7.2%)
- 295/35R19 (−3.0%)
- 295/40R19 (+1.1%)
- 295/45R19 (+5.3%)
- 305/30R19 (−6.3%)
- 305/35R19 (−2.0%)
Reading the 285/40R19 size
- 285 — section width in millimetres (11.22 in).
- 40 — aspect ratio: the sidewall is 40 % of the width, 114.0 mm.
- R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
- 19 — fits a 19-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.