195/50R20 tire size
A 195/50R20 tire is 27.68 inches (703.0 mm) tall, 7.68 in (195 mm) wide and fits a 20-inch wheel. In inch notation it is roughly a 27.7x7.7R20 — a "28-inch" tire.
| Overall diameter | 27.68 in | 703.0 mm |
|---|---|---|
| Section width | 7.68 in | 195 mm |
| Sidewall height | 3.84 in | 97.5 mm |
| Circumference | 86.95 in | 2,209 mm |
| Revolutions | 728.7 per mile | 452.8 per km |
| Rim diameter | 20 in | 508.0 mm |
Compare 195/50R20 with another size
Alternative sizes on the same 20-inch wheel
Sizes in use within ±3 % of the overall diameter of 195/50R20:
Plus and minus sizes for 195/50R20
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 205/60R18 | Minus 2 (18 in) | 27.69 in | +0.03% |
| 245/50R18 | Minus 2 (18 in) | 27.65 in | −0.11% |
| 225/55R18 | Minus 2 (18 in) | 27.74 in | +0.24% |
| 215/55R18 | Minus 2 (18 in) | 27.31 in | −1.32% |
| 245/45R19 | Minus 1 (19 in) | 27.68 in | +0.01% |
| 225/50R19 | Minus 1 (19 in) | 27.86 in | +0.65% |
| 205/55R19 | Minus 1 (19 in) | 27.88 in | +0.73% |
| 215/50R19 | Minus 1 (19 in) | 27.46 in | −0.77% |
| 245/35R21 | Plus 1 (21 in) | 27.75 in | +0.27% |
Vehicles approved with 195/50R20 tires
Models whose Swiss type approval lists 195/50R20 as a standard or optional size (41 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 20-inch sizes
Reading the 195/50R20 size
- 195 — section width in millimetres (7.68 in).
- 50 — aspect ratio: the sidewall is 50 % of the width, 97.5 mm.
- R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
- 20 — fits a 20-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.