305/30R19 tire size
A 305/30R19 tire is 26.20 inches (665.6 mm) tall, 12.01 in (305 mm) wide and fits a 19-inch wheel. In inch notation it is roughly a 26.2x12.0R19.
| Overall diameter | 26.20 in | 665.6 mm |
|---|---|---|
| Section width | 12.01 in | 305 mm |
| Sidewall height | 3.60 in | 91.5 mm |
| Circumference | 82.32 in | 2,091 mm |
| Revolutions | 769.6 per mile | 478.2 per km |
| Rim diameter | 19 in | 482.6 mm |
Compare 305/30R19 with another size
Alternative sizes on the same 19-inch wheel
Sizes in use within ±3 % of the overall diameter of 305/30R19:
Plus and minus sizes for 305/30R19
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 335/35R17 | Minus 2 (17 in) | 26.23 in | +0.11% |
| 285/40R17 | Minus 2 (17 in) | 25.98 in | −0.87% |
| 275/40R17 | Minus 2 (17 in) | 25.66 in | −2.07% |
| 295/35R18 | Minus 1 (18 in) | 26.13 in | −0.29% |
| 335/30R18 | Minus 1 (18 in) | 25.91 in | −1.11% |
| 285/35R18 | Minus 1 (18 in) | 25.85 in | −1.34% |
| 275/40R18 | Minus 1 (18 in) | 26.66 in | +1.74% |
| 275/30R20 | Plus 1 (20 in) | 26.50 in | +1.11% |
| 335/25R20 | Plus 1 (20 in) | 26.59 in | +1.49% |
| 285/30R20 | Plus 1 (20 in) | 26.73 in | +2.01% |
| 295/30R20 | Plus 1 (20 in) | 26.97 in | +2.91% |
| 295/25R21 | Plus 2 (21 in) | 26.81 in | +2.30% |
Vehicles approved with 305/30R19 tires
Models whose Swiss type approval lists 305/30R19 as a standard or optional size (97 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 19-inch sizes
Reading the 305/30R19 size
- 305 — section width in millimetres (12.01 in).
- 30 — aspect ratio: the sidewall is 30 % of the width, 91.5 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.